Cutting device and method for flake nanomaterial saturable absorber

Abstract

This invention provides a cutting device and method for saturable absorbers of sheet-like nanomaterials, mainly addressing the technical problems of large cutting errors, low efficiency, high material loss, and the potential impact of the cutting process on film quality in existing cutting methods. The cutting device includes a cutting unit, a support unit, and an optical fiber jumper unit. A first support component in the support unit provides support for a placement platform, which is a horizontally opening plate structure. The upper surface of the placement platform is used to place the saturable absorber to be cut. The optical fiber jumper in the optical fiber jumper unit is fixed directly below the placement platform and opposite the cutting head. The cutting head is raised and lowered by a cutting head control component, thereby rapidly cutting the saturable absorber. The cut saturable absorber can be directly attached to the upper end of the optical fiber jumper. This invention also provides a cutting method based on this cutting device.

Description

Technical Field

[0001] This invention belongs to the field of nonlinear optical cutting technology, specifically relating to a cutting device and method for saturable absorbers of sheet nanomaterials. Background Technology

[0002] In mode-locking technology, passive mode-locking does not require introducing external signals into the laser to generate pulses. Instead, it typically uses light waves within the laser cavity to induce changes in a specific element within the cavity. These changes, in turn, alter the light within the cavity. The element commonly used is a saturable absorber, also known as a transmissive absorber. This element is a device whose transmittance is related to light intensity; its absorptivity decreases as the incident light intensity increases. When it reaches a saturation value, it becomes transparent to the laser. This saturable absorption characteristic is used to modulate the losses within the laser cavity. Therefore, for passive mode-locking, an ideal saturable absorber will absorb low-intensity light while allowing high-intensity light to pass through, thus generating pulses.

[0003] Layered nanomaterials refer to materials with nanoscale dimensions and a layered structure. These materials are typically composed of atoms, molecules, or nanoparticles. In the material preparation process, layered nanomaterials are usually mixed uniformly with a polyvinyl alcohol solution and then dried to obtain a thin film-like saturable absorber. This saturable absorber is generally used in fiber lasers. Specifically, the saturable absorber is placed in a ring laser cavity and cut into a specific shape. The cut saturable absorber is then covered onto the end face of the fiber optic jumper to meet the experimental requirements for fiber optic jumper coverage.

[0004] The existing cutting method involves manually cutting the saturable absorber, which has the following problems: (1) Large cutting error: Manual cutting usually makes it difficult to guarantee accurate size and shape because manual operation is easily affected by human factors, resulting in large cutting error of materials.

[0005] (2) Low cutting efficiency: The manual cutting process usually requires a lot of time and effort, especially when performing a large number of cuts and film selection, the efficiency is low.

[0006] (3) Material loss is relatively large: The manual cutting process is prone to a certain degree of material waste and loss, especially for expensive high-performance film materials, the loss is relatively large and the cost is relatively high.

[0007] (4) It affects the quality of the film: When cutting manually, it is easy to accidentally touch the surface of the material, causing artificial contamination of the material. Furthermore, the cut edges may be uneven, rough, or damaged, which in turn affects the overall quality and application effect of the film. Summary of the Invention

[0008] The purpose of this invention is to provide a cutting device and method for saturable absorbers of sheet nanomaterials, mainly to solve the technical problems of existing cutting methods, such as large cutting errors, low efficiency, large material loss, and the cutting process easily affecting the quality of the film.

[0009] To achieve the above objectives, the technical solution of the present invention is as follows: A cutting device for saturable absorbers of sheet-like nanomaterials, characterized by: Includes cutting unit, support unit and fiber optic jumper unit; The cutting unit includes a top cover, a cutting head and a cutting head control assembly disposed inside the top cover; the head of the cutting head is hollow and faces downward, and the tail is connected to the cutting head control assembly, which is mounted on the top cover and is used to control the raising and lowering of the cutting head; The support unit includes a housing, a placement platform, a first support component, a second support component, and a base; the housing is a hollow structure, with its upper end connected to the lower end of the top cover and its lower end connected to the base via the second support component; Both the placement platform and the first support assembly are located inside the housing; the first support assembly is connected to the side wall of the housing and is used to support the placement platform, and the first support assembly has an internal channel along the vertical direction; The placement platform is a horizontally opening and closing plate-shaped structure. When closed, it forms an upward-opening wedge-shaped groove in the middle. The upper surface of the placement platform is used to place the saturable absorbent to be cut, and the two ends of the lower surface are respectively movably connected to the first support component through elastic members. A fixing member is provided above the placement platform to fix the saturable absorbent to be cut on the placement platform. The fiber optic jumper unit is located between the housing and the base, and includes a fiber optic jumper and a retainer. The lower end of the retainer is mounted on the base, and the upper end is lower than the plane where the bottom of the housing is located. The lower end of the fiber optic jumper is fixed inside the retainer, and the upper end extends into the internal channel, with a gap between it and the lower surface of the placement platform. The upper end of the fiber optic jumper is coaxially arranged with the head of the cutting head. The width of the wedge-shaped groove is greater than the dimension of the head of the cutting head in the corresponding direction, and the maximum radial dimension of the cutting head is smaller than the radial dimension of the upper end of the fiber optic jumper.

[0010] Furthermore, the first support assembly includes a hollow columnar support body, two parallel first guide rails, and two parallel second guide rails; the first and second guide rails are perpendicular to each other and are located at different heights of the support body, passing through the support body axially perpendicular to the support body and being movably connected to the support body; the internal channel is located inside the support body and is coaxial with the support body. The side wall of the housing is provided with a first sliding groove corresponding to the ends of the first guide rail and the second guide rail respectively. The support body is slidably connected to the side wall of the housing by the sliders at the ends of the first guide rail and the second guide rail respectively cooperating with the corresponding first sliding grooves.

[0011] Furthermore, the placement platform includes a first platform and a second platform with identical structures; both the first platform and the second platform are located above the support body, and their ends that are close to each other are inclined surfaces. In the initial state, the bottom ends of the inclined surfaces of the first platform and the second platform contact each other to form a wedge-shaped groove; a gap is left between the upper end of the fiber optic jumper and the lower surface of the first platform and the second platform corresponding to the wedge-shaped groove. The lower surfaces of the first platform and the second platform are respectively provided with two slide rails, which are located on both sides of the corresponding elastic element and are in the same direction as the extension and contraction direction of the elastic element. The upper surface of the support is provided with a second slide groove corresponding to each slide rail; one end of the elastic element is fixed to the opposite ends of the first platform and the second platform, and the other end is fixed to the support. The first platform and the second platform are movably connected to the support through the cooperation of the elastic element with the slide rail and the corresponding second slide groove.

[0012] Furthermore, the top cover has a cutting channel in the middle along the vertical direction, and the cutter head control assembly and the cutting cutter head are both located in the cutting channel; the side wall of the cutting channel has a set of guide grooves and a set of through holes in the vertical direction, and the guide grooves are located above the through holes, with the lower end of the guide grooves corresponding to the inner end of the through holes; The cutter head control assembly includes a pressure block, a spring, a first connecting rod, a first balancing assembly, and a second balancing assembly; The two ends of the first connecting rod are fixedly connected to the pressure block and the cutting head, respectively, wherein the top of the pressure block extends out of the top cover; The first connecting assembly includes a sleeve and two second connecting rods; the ends of the two second connecting rods that are close to each other are fixed to the sleeve, and the ends that are far apart from each other are fixed to the inner wall of the cutting channel; the spring and the sleeve are sequentially sleeved on the first connecting rod from top to bottom, the upper end of the spring is connected to the pressure block, the lower end is connected to the upper end of the sleeve, and there is a distance between the lower end of the sleeve and the tail of the cutting head; The second connecting component includes two V-shaped diagonal rods and two straight rods. The two V-shaped diagonal rods are made of elastic material, with their lower ends fixedly connected to the tail of the cutting head, and their upper ends located in the upper part of a set of guide grooves when the pressure block is not compressed. When the pressure block is compressed to its limit, they extend into a set of through holes. The two straight rods are located in a set of through holes in the cutting channel and are movably connected to the top cover. The ends of the two straight rods that are far apart from each other are provided with pressers. In the initial state, the ends of the two straight rods that are close to each other are flush with the bottom of the guide groove or have a gap.

[0013] Furthermore, the presser includes a pressing block and a return spring disposed at opposite ends of the straight rod. The return spring is fitted onto the straight rod, with one end connected to the top cover and the other end connected to the pressing block.

[0014] Furthermore, the gap between the upper end of the fiber optic jumper and the lower surface of the placement platform is 5-8 mm; the second support member includes four support rods evenly distributed below the housing, the upper end of each support rod being connected to the lower end of the housing, and the lower end being connected to the base.

[0015] Furthermore, the top cover is provided with a handle, which can be used to open the top cover.

[0016] Furthermore, the fixing component includes fixing plates located above the first platform and the second platform respectively, and buckles disposed at both ends of each fixing plate. The corresponding fixing plates are connected to the first platform and the second platform by the buckles, thereby fixing the saturable absorbent to be cut to the upper surface of the first platform and the second platform.

[0017] The present invention also provides a method for cutting saturable absorbers of sheet-like nanomaterials, characterized in that the above-mentioned cutting device for saturable absorbers of sheet-like nanomaterials is used, and the method includes the following steps: Step 1: Select a cutting head of the appropriate size according to the size of the upper end of the fiber optic jumper, and install the cutting head onto the top cover through the cutting head control assembly so that the upper end of the fiber optic jumper and the head of the cutting head are coaxially set. Step 2: Place the saturable absorbent to be cut on the placement platform; Step 3: Control the cutting head to move down through the cutting head control component, so that the cutting head first cuts the saturable absorber to be cut in the wedge-shaped groove. Then, the cutting head causes the placement platform to open horizontally from the middle to both sides. After that, the cut-off saturable absorber covers the upper end of the fiber optic jumper. Step 4: Control the cutting head to move upward through the cutter head control component. When the cutting head leaves the placement platform, the placement platform returns to its initial state under the action of the elastic element, thus completing one cut. Step 5: Replace the fiber optic jumper and adjust the corresponding position of the saturable absorber to be cut and the cutting head. Repeat steps 3 and 4 to perform the next cut until the required number of cuts is completed.

[0018] Furthermore, in step 5, adjusting the corresponding position of the saturable absorbent to be cut and the cutting head specifically involves first opening the top cover, and then moving the relative position of the support body on the first guide rail and the second guide rail to make the position of the saturable absorbent to be cut correspond to that of the cutting head.

[0019] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides a cutting device for saturable absorbers of sheet-like nanomaterials, comprising a cutting unit, a support unit, and an optical fiber jumper unit. The first support component in the support unit provides support for a placement platform, which is a horizontally opening plate-like structure. The upper surface of the placement platform is used to place the saturable absorber to be cut. The optical fiber jumper in the optical fiber jumper unit is fixed directly below the placement platform and opposite the cutting head. The cutting head is raised and lowered by a cutting head control component, thereby rapidly cutting the saturable absorber. The cut saturable absorber can be directly attached to the upper end of the optical fiber jumper. The cutting device of the present invention has high cutting efficiency and is a non-contact cutting method, thus avoiding the influence of physical contact on the material and improving cutting quality.

[0020] 2. In the cutting device for saturable absorbable sheet nanomaterials provided by the present invention, the first support component includes a hollow columnar support body, a first guide rail and a second guide rail. The support body is slidably connected to the inner wall of the shell through the first guide rail and the second guide rail respectively. By moving the support body, the position of the placement platform can be adjusted, and the optimal cutting area can be selected according to the requirements to improve the cutting quality and cutting efficiency.

[0021] 3. In the cutting device for saturable absorbers of sheet nanomaterials provided by the present invention, the placement platform is a horizontally opening and closing plate structure. After one cutting is completed, it can automatically close, thereby facilitating the next cutting and further improving the reusability of the device.

[0022] 4. In the cutting device for saturable absorbers of sheet nanomaterials provided by the present invention, the cutting head can be precisely controlled by the cutting head control component to complete the cutting of the saturable absorber, thereby improving the cutting accuracy.

[0023] 5. In the cutting device for saturable absorbers of sheet nanomaterials provided by the present invention, the gap between the upper end of the fiber optic jumper and the lower surface of the placement platform is 5~8mm. This gap not only ensures that the opening and closing of the placement platform is not affected, but also ensures that the cut saturable absorber is attached to the upper surface of the fiber optic jumper in a timely manner, further improving the process accuracy.

[0024] 6. In the cutting device for saturable absorbers of sheet nanomaterials provided by the present invention, the saturable absorber to be cut can be fixed on the upper surface of the first platform and the second platform by a fixing member, thereby ensuring that the position of the saturable absorber remains unchanged during the cutting process, thereby improving the cutting accuracy and ensuring the cutting quality.

[0025] 7. The cutting device for saturable absorbers of sheet nanomaterials provided by the present invention allows each part to be maintained individually, thereby reducing maintenance costs and extending the service life of the cutting device.

[0026] 8. The cutting method for saturable absorbers of sheet nanomaterials provided by the present invention is easy to operate, and each saturable absorber obtained by cutting with the same cutting head during the cutting process is of uniform size, without the need for secondary adjustment, thereby improving the cutting accuracy and cutting efficiency. Attached Figure Description

[0027] Figure 1 This is a three-dimensional embodiment of the cutting device for sheet-like nanomaterial saturable absorbers of the present invention. Figure 1 ; Figure 2 This is a three-dimensional embodiment of the cutting device for sheet-like nanomaterial saturable absorbers of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the internal structure of the top cover in an embodiment of the cutting device for sheet nanomaterial saturable absorbers of the present invention; Figure 4 This is a partially enlarged view of the cutter head control component in an embodiment of the cutting device for sheet nanomaterial saturable absorbers of the present invention; Figure 5 This is a schematic diagram showing the connection state between the housing and the first support component in an embodiment of the cutting device for sheet nanomaterial saturable absorbents of the present invention; Figure 6 This is a schematic diagram showing the connection state between the placement platform and the first support component in an embodiment of the cutting device for sheet nanomaterial saturable absorbers of the present invention; Figure 7 This is a schematic diagram of the structure of the first support component in an embodiment of the cutting device for sheet nanomaterial saturable absorbers of the present invention; Figure 8 This is a schematic diagram of the fiber optic jumper unit in an embodiment of the cutting device for sheet nanomaterial saturable absorbers of the present invention; Figure 9 This is a schematic diagram of the platform structure in an embodiment of the cutting device for sheet nanomaterial saturable absorbers of the present invention.

[0028] The attached figures are labeled as follows: 1-Cutting head, 2-Cut head control assembly, 21-Pressure block, 22-Spring, 23-First connecting rod, 24-Sleeve, 25-Second connecting rod, 26-Seven-shaped diagonal rod, 27-Straight rod, 28-Pressing device, 3-Top cover, 31-Cutting channel, 311-Guide groove, 312-Through hole, 4-Housing shell, 41-First slide groove, 5-Placement platform, 51-First platform, 511-Slide rail, 52-Second platform, 53-Fixing component, 531-Fixing plate, 532-Snap fastener, 6-First support assembly, 61-Support body, 611-Second slide groove, 62-First guide rail, 63-Second guide rail, 7-Second support assembly, 71-Support rod, 8-Base, 9-Elastic component, 10-Fiber optic jumper, 11-Fixing device, 12-Handle. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Combination Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, this embodiment provides a cutting device for a saturable absorber of sheet nanomaterials, including a cutting unit, a support unit, and an optical fiber jumper unit.

[0031] The cutting unit includes a top cover 3, a cutting head 1 and a cutting head control assembly 2 disposed within the top cover 3; the cutting head 1 has a hollow head with its head facing downwards, and its tail is connected to the cutting head control assembly 2, which is mounted on the top cover 3 and is used to control the raising and lowering of the cutting head 1. Generally, the size of the cutting head 1 is determined according to the coverage size of the end of the fiber optic jumper 10. In this embodiment, the cutting head 1 is a 1mm × 1mm square-mouth cutting head, but a round-mouth cutting head or other types of cutting heads can also be selected as needed.

[0032] The top cover 3 has a cutting channel 31 in the middle along the vertical direction. The cutter head control assembly 2 and the cutting cutter head 1 are both located in the cutting channel 31. A set of guide grooves 311 and a set of through holes 312 are respectively provided on the side wall of the cutting channel 31 along the vertical direction. The guide grooves 311 are located above the through holes 312, and their lower ends correspond to the inner ends of the through holes 312.

[0033] The cutter head control assembly 2 includes a pressure block 21, a spring 22, a first connecting rod 23, a first connecting assembly, and a second connecting assembly. The two ends of the first connecting rod 23 are fixedly connected to the pressure block 21 and the cutting cutter head 1, respectively, and the top of the pressure block 21 extends out of the top cover 3.

[0034] The first connecting assembly includes a sleeve 24 and two second connecting rods 25; the ends of the two second connecting rods 25 that are close to each other are fixed to the sleeve 24, and the ends that are far apart from each other are fixed to the inner wall of the cutting channel 31; the spring 22 and the sleeve 24 are sequentially sleeved on the first connecting rod 23 from top to bottom, the upper end of the spring 22 is connected to the pressure block 21, the lower end is connected to the upper end of the sleeve 24, and there is a distance between the lower end of the sleeve 24 and the tail of the cutting head 1.

[0035] The second connecting assembly includes two V-shaped diagonal rods 26 and two straight rods 27. The two V-shaped diagonal rods 26 are made of elastic material, with their lower ends fixed to the tail of the cutting head 1, and their upper ends located in a set of guide grooves 311 of the cutting channel 31 when the pressure block 21 is not compressed. When the pressure block 21 is compressed to its limit, they extend into a set of through holes 312. The two straight rods 27 are located in a set of through holes 312 of the cutting channel 31 and are movably connected to the top cover 3. The ends of the two straight rods 27 that are far apart from each other are provided with pressers 28. In the initial state, the ends of the two straight rods 27 that are close to each other are flush with the bottom of the guide grooves 311 or have a gap. The pressers 28 include a pressing block and a return spring located at the outer end of the straight rod 27 (i.e., the ends of the two straight rods 27 that are far apart from each other). The return spring is fitted on the straight rod 27, with one end connected to the top cover 3 and the other end connected to the pressing block, and is used to reset the straight rod 27 after it is popped out.

[0036] Combination Figure 1 , Figure 2 , Figure 5 As shown, the support unit includes a housing 4, a placement platform 5, a first support assembly 6, a second support assembly 7, and a base 8. The housing 4 is a hollow structure without top or bottom covers; its upper end is connected to the lower end of the top cover 3, and its lower end is connected to the base 8 via the second support assembly 7. The top cover 3 is also equipped with a handle 13 for quick opening before and after cutting.

[0037] Combination Figure 5 , Figure 6 , Figure 7As shown, both the placement platform 5 and the first support assembly 6 are located inside the housing 4. The first support assembly 6 is connected to the side wall of the housing 4 and is used to support the placement platform 5. The first support assembly 6 includes a hollow columnar support body 61, two parallel first guide rails 62, and two parallel second guide rails 63. The first guide rails 62 and the second guide rails 63 are perpendicular to each other and are located at different heights of the support body 61. The axial direction of the support body 61 passes through the support body 61 and is movably connected to the support body 61. The side wall of the housing 4 is provided with first sliding grooves 41 corresponding to the ends of the first guide rails 62 and the second guide rails 63, respectively. The support body 61 is slidably connected to the side wall of the housing 4 by the sliders at the ends of the first guide rails 62 and the second guide rails 63 engaging with the corresponding first sliding grooves 41. This allows the position of the placement platform 5 to be changed and the optimal cutting area of ​​the saturable absorbent to be cut to be determined to be adjusted.

[0038] The internal channel is located inside the support 61 and is coaxial with the support 61. The maximum radial dimension of the cutting head 1 is smaller than the radial dimension of the upper end of the fiber optic jumper 10.

[0039] The second support assembly 7 includes four support rods 71 ​​evenly distributed below the housing 4. The upper end of each support rod 71 is connected to the lower end of the housing 4, and the lower end is connected to the base 8.

[0040] Combination Figure 1 and Figure 8 As shown, the fiber optic jumper unit is located between the housing 4 and the base 8, and includes a fiber optic jumper 10 and a retainer 11. The lower end of the retainer 11 is mounted on the base 8, and the upper end is lower than the plane where the bottom of the housing 4 is located, so as to provide sufficient space for the assembly and disassembly of the fiber optic jumper 10. The lower end of the fiber optic jumper 10 is fixed in the retainer 11 by a fixing piece to ensure that the position of the fiber optic jumper 10 remains unchanged during cutting. The upper end of the fiber optic jumper 10 extends into the internal channel and leaves a gap with the lower surface of the placement platform 5. The upper end of the fiber optic jumper 10 is coaxially arranged with the head of the cutting head 1, and the width of the wedge-shaped groove is greater than the dimension of the head of the cutting head 1 in the corresponding direction.

[0041] Combination Figure 5 , Figure 6 and Figure 9 As shown, the placement platform 5 is a horizontally opening and closing plate-shaped structure. Its upper surface is used to place the saturable absorbent to be cut, and its two ends are movably connected to the first support assembly 6 through elastic members 9.

[0042] The placement platform 5 includes a first platform 51 and a second platform 52 with identical structures. Both the first platform 51 and the second platform 52 are located above the support body 61, and their ends, which are far apart from each other, are connected to the support body 61 via elastic elements 9. The elastic elements 9 can be springs or other elastic devices. The ends of the first platform 51 and the second platform 52 that are close to each other are inclined surfaces. In the initial state, the bottom ends of the inclined surfaces of the first platform 51 and the second platform 52 contact each other to form a wedge-shaped groove. The upper end of the fiber optic jumper 10 is located directly below the contact end of the first platform 51 and the second platform 52 (i.e., directly below the wedge-shaped groove), and there is a gap between it and the lower surface of the wedge-shaped groove. This gap is generally 5~8mm, so that when the first platform 51 and the second platform 52 are separated, they will not touch the upper end of the fiber optic jumper 10.

[0043] like Figure 5 As shown, the first platform 51 and the second platform 52 are respectively provided with fixing members 53. The fixing members 53 include fixing plates 531 located above the first platform 51 and the second platform 52 respectively, and buckles 532 provided at both ends of each fixing plate 531. The corresponding fixing plates 531 are connected to the first platform 51 and the second platform 52 by the buckles 532, thereby fixing the saturable absorbent to be cut to the upper surface of the first platform 51 and the second platform 52, preventing small displacement of the selected area to be cut during cutting, which would affect the cutting effect.

[0044] Combination Figure 6 and Figure 7 As shown, the lower surfaces of the first platform 51 and the second platform 52 are respectively provided with two slide rails 511. The two slide rails 511 are located on both sides of the corresponding elastic member 9, and their directions are consistent with the extension and retraction directions of the elastic member 9. The upper surface of the support body 61 is respectively provided with a second slide groove 611 corresponding to each slide rail 511. One end of the elastic member 9 is fixed to the opposite ends of the first platform 51 and the second platform 52, and the other end is fixed to the support body 61. The first platform 51 and the second platform 52 are movably connected to the support body 61 through the cooperation of the elastic member 9 with the slide rail 511 and the corresponding second slide groove 611.

[0045] This invention designs the cutting device into a modular structure, making it easy to maintain and upgrade, thereby reducing maintenance costs while ensuring the long-term reliability of the equipment.

[0046] The present invention also provides a method for cutting saturable absorbers of sheet-like nanomaterials, comprising the following steps: Step 1: Select a cutting head 1 of the corresponding size according to the size of the upper end of the fiber optic jumper 10, and install the cutting head 1 onto the top cover 3 through the cutting head control assembly 2, so that the head of the cutting head 1 faces down and is opposite to the upper end of the fiber optic jumper 10, that is, the upper end of the fiber optic jumper 10 and the head of the cutting head 1 are coaxially set.

[0047] Step 2: Place the saturable absorbent to be cut on the placement platform 5 and fix it with the fastener 53. When it is necessary to adjust or change the cutting area of ​​the saturable absorbent to be cut, place the saturable absorbent to be cut on the placement platform 5 and adjust it by changing the relative position of the support 61 and the housing 4 so that the cutting area is directly below the cutting head 1.

[0048] Step 3: Control the cutting head 1 to move down through the cutting head control component 2. The cutting head 1 cuts the saturable absorber to be cut in the wedge-shaped groove. Then, during the cutting process, the cutting head 1 will cause the placement platform 5 to open horizontally from the middle to both sides. After that, the cut saturable absorber is attached to the upper end of the fiber optic jumper 10.

[0049] Step 4: Control the cutting head 1 to move upward through the cutting head control component 2. When the cutting head 1 leaves the placement platform 5, the placement platform 5 returns to its initial state under the action of the elastic element 9, thus completing one cut.

[0050] It should be noted that during the actual cutting process, after the cut saturable absorber is attached to the fiber optic jumper 10, the fiber optic jumper with the attached saturable absorber generally needs to be removed, and the cut saturable absorber needs to be tested to see if it meets the requirements. If it meets the requirements, one cutting is completed; if it does not meet the requirements, the above steps need to be repeated until a saturable absorber that meets the requirements is obtained.

[0051] Step 5: To improve the reusability of the device, after one cutting operation, the fiber optic jumper 10 can be replaced for the next cutting operation. Specifically, replace the fiber optic jumper 10, adjust the corresponding position of the saturable absorber to be cut and the cutting head 1, and repeat steps 3 and 4 for the next cutting operation until the required number of cutting operations is completed. The following is a detailed description of the control process of the cutting head 1 by the cutting head control component 2.

[0052] like Figure 3 As shown, in the initial state, the two 7-shaped diagonal rods 26 are located at the upper part of the corresponding guide grooves 311, the ends of the two straight rods 27 that are close to each other are flush with the bottom of the guide grooves 311, the lower end of the cutting head 1 is located in the cutting channel 31, the upper end of the pressure block 21 extends out of the top cover 3, and the spring 22 is in an uncompressed natural state.

[0053] When cutting is required, press down on the pressure block 21. The pressure block 21 will drive the first connecting rod 23, the cutting head 1, and the two V-shaped inclined rods 26 to move down synchronously. During this process: ① The cutting head 1 completes the cutting of the saturable absorbent and opens the placement platform 5 horizontally; ② The sleeve 24 and the two second connecting rods 25 remain relatively fixed with the top cover 3, and the spring 22 is gradually compressed; ③ The upper ends of the two V-shaped inclined rods 26 slide down along the guide groove 311. When they move down to the position of the through hole 312, the upper ends of the two V-shaped inclined rods 26 enter the corresponding through holes 312 respectively, and push the two straight rods 27 out to both sides. At this time, the cutting head 1 is in a locked state.

[0054] When the cutting is completed and the cutting head 1 needs to be reset, the two straight rods 27 are moved towards each other by the presser 28, so that the upper ends of the two V-shaped diagonal rods 26 are pushed out of the through hole 312; then, the two V-shaped diagonal rods 26 move upward along the guide groove 311, and at the same time, under the action of the spring 22, the cutting head 1, the first connecting rod 23, and the pressure block 21 move upward synchronously; when the upper ends of the two V-shaped diagonal rods 26 reach the uppermost end of the guide groove 311, the two V-shaped diagonal rods 26 stop moving, and the cutting head 1, the first connecting rod 23, and the pressure block 21 return to their initial positions.

[0055] During this process, when the cutting head 1 leaves the first platform 51 and the second platform 52, the first platform 51 and the second platform 52, under the action of the elastic element 9 and with the cooperation of the slide rail 511 and the corresponding second slide groove 611, return to their initial state, that is, the bottom ends of the inclined surfaces of the first platform 51 and the second platform 52 contact each other to form a wedge-shaped groove. When cutting is required again, the above steps are repeated.

[0056] This invention utilizes advanced precision cutting technology to ensure extremely accurate shape and size, which is crucial for applications involving millimeter-scale square-shaped saturable absorbers. Furthermore, this invention employs non-contact cutting technology, avoiding the impact of physical contact on the material, reducing wear during the cutting process, and also preventing contamination.

[0057] Based on the above embodiments, those skilled in the art can implement the present invention through its content. Within the framework of the claims, any improvements based on the concept of the present invention are considered to fall within the protection scope of the present invention.

Claims

1. A cutting device for saturable absorbers of sheet-like nanomaterials, characterized in that: Includes cutting unit, support unit and fiber optic jumper unit; The cutting unit includes a top cover (3), a cutting head (1) and a cutting head control assembly (2) disposed inside the top cover (3); the head of the cutting head (1) is facing downward and is a hollow head, and the tail is connected to the cutting head control assembly (2). The cutting head control assembly (2) is mounted on the top cover (3) and is used to control the lifting and lowering of the cutting head (1); The support unit includes a housing (4), a placement platform (5), a first support component (6), a second support component (7), and a base (8); the housing (4) is a hollow structure, with its upper end connected to the lower end of the top cover (3) and its lower end connected to the base (8) through the second support component (7); The placement platform (5) and the first support assembly (6) are both located inside the housing (4); the first support assembly (6) is connected to the side wall of the housing (4) and is used to support the placement platform (5). The first support assembly (6) has an internal channel in the vertical direction; the first support assembly (6) includes a hollow columnar support body (61), two parallel first guide rails (62) and two parallel second guide rails (63); the first guide rails (62) and the second guide rails (63) are perpendicular to each other and are respectively located on the support body (61). At different heights, the axial direction of the vertical support (61) passes through the support (61) and is movably connected to the support (61); the internal channel is located inside the support (61) and is coaxial with the support (61); the side wall of the housing (4) is provided with a first sliding groove (41) corresponding to the ends of the first guide rail (62) and the second guide rail (63), respectively; the support (61) is connected to the side wall of the housing (4) by the sliders at the ends of the first guide rail (62) and the second guide rail (63) respectively cooperating with the corresponding first sliding groove (41); The placement platform (5) is a horizontally opening and closing plate structure, including a first platform (51) and a second platform (52) with the same structure; the first platform (51) and the second platform (52) are both located above the support body (61), and the ends that are close to each other are inclined. In the initial state, the bottom ends of the inclined surfaces of the first platform (51) and the second platform (52) are in contact with each other to form a wedge-shaped groove; the upper surface of the first platform (51) and the second platform (52) is used to place the saturable absorbent to be cut, and the two ends of the lower surface that are far apart from each other are respectively connected to the first support assembly (6) through elastic members (9); the first platform (51) and the second platform (52) are respectively provided with fixing members (53) to fix the saturable absorbent to be cut on the placement platform (5); The fiber optic jumper unit is located between the housing (4) and the base (8), and includes a fiber optic jumper (10) and a fixing device (11); the lower end of the fixing device (11) is mounted on the base (8), and the upper end is lower than the plane where the bottom of the housing (4) is located; the lower end of the fiber optic jumper (10) is fixed inside the fixing device (11), the upper end extends into the internal channel, and there is a gap between it and the lower surface of the first platform (51) and the second platform (52) corresponding to the wedge-shaped groove; the upper end of the fiber optic jumper (10) is coaxially arranged with the head of the cutting head (1), the width of the wedge-shaped groove is greater than the size of the head of the cutting head (1) in the corresponding direction, and the maximum radial size of the cutting head (1) is smaller than the radial size of the upper end of the fiber optic jumper (10).

2. The cutting device for saturable absorbers of sheet-like nanomaterials according to claim 1, characterized in that: The lower surfaces of the first platform (51) and the second platform (52) are respectively provided with two slide rails (511). The two slide rails (511) are located on both sides of the corresponding elastic member (9), and their directions are consistent with the extension and retraction directions of the elastic member (9). The upper surface of the support (61) is provided with a second slide groove (611) corresponding to each slide rail (511); one end of the elastic element (9) is fixed to the ends of the first platform (51) and the second platform (52) that are far apart from each other, and the other end is fixed to the support (61). The first platform (51) and the second platform (52) are connected to the support (61) through the cooperation of the elastic element (9) with the slide rail (511) and the corresponding second slide groove (611).

3. The cutting device for saturable absorbers of sheet-like nanomaterials according to claim 1 or 2, characterized in that: The top cover (3) has a cutting channel (31) in the middle along the vertical direction. The cutter head control assembly (2) and the cutting cutter head (1) are both located in the cutting channel (31). The side wall of the cutting channel (31) is provided with a set of guide grooves (311) and a set of through holes (312) in the vertical direction. The guide grooves (311) are located above the through holes (312), and their lower ends correspond to the inner ends of the through holes (312). The cutter head control assembly (2) includes a pressure block (21), a spring (22), a first connecting rod (23), a first connecting assembly, and a second connecting assembly; The two ends of the first connecting rod (23) are fixedly connected to the pressure block (21) and the cutting head (1) respectively, wherein the top of the pressure block (21) extends out of the top cover (3). The first connecting assembly includes a sleeve (24) and two second connecting rods (25); the two second connecting rods (25) are respectively fixed to the sleeve (24) at their close ends and respectively fixed to the inner wall of the cutting channel (31) at their far ends; the spring (22) and the sleeve (24) are sequentially sleeved on the first connecting rod (23) from top to bottom, the upper end of the spring (22) is connected to the pressure block (21), the lower end is connected to the upper end of the sleeve (24), and there is a distance between the lower end of the sleeve (24) and the tail of the cutting head (1); The second connecting component includes two 7-shaped diagonal rods (26) and two straight rods (27); the two 7-shaped diagonal rods (26) are made of elastic material, and their lower ends are fixedly connected to the tail of the cutting head (1), and their upper ends are located in the upper part of a set of guide grooves (311) when the pressure block (21) is not compressed. When the pressure block (21) is compressed to the limit, they extend into a set of through holes (312); the two straight rods (27) are located in a set of through holes (312) of the cutting channel (31) and are movably connected to the top cover (3); the ends of the two straight rods (27) that are far apart from each other are respectively provided with pressers (28). In the initial state, the ends of the two straight rods (27) that are close to each other are flush with the bottom of the guide groove (311) or have a gap.

4. The cutting device for saturable absorbers of sheet-like nanomaterials according to claim 3, characterized in that: The presser (28) includes a pressing block and a return spring disposed at opposite ends of the straight rod (27). The return spring is mounted on the straight rod (27), with one end connected to the top cover (3) and the other end connected to the pressing block.

5. The cutting device for saturable absorbers of sheet-like nanomaterials according to claim 4, characterized in that: The gap between the upper end of the fiber optic jumper (10) and the lower surface of the placement platform (5) is 5~8mm; The second support assembly (7) includes four support rods (71) evenly distributed below the housing (4). The upper end of each support rod (71) is connected to the lower end of the housing (4), and the lower end is connected to the base (8).

6. The cutting device for saturable absorbers of sheet-like nanomaterials according to claim 5, characterized in that: The top cover (3) is provided with a handle (12), which can be used to open the top cover (3).

7. The cutting device for saturable absorbers of sheet-like nanomaterials according to claim 1, characterized in that: The fixing member (53) includes a fixing plate (531) located above the first platform (51) and the second platform (52) respectively, and a buckle (532) provided at both ends of each fixing plate (531). The corresponding fixing plate (531) is connected to the first platform (51) and the second platform (52) by the buckle (532), thereby fixing the saturable absorbent to be cut to the upper surface of the first platform (51) and the second platform (52).

8. A method for cutting saturable absorbers of sheet-like nanomaterials, characterized in that, The cutting apparatus for saturable absorbers of sheet-like nanomaterials according to any one of claims 1 to 7 includes the following steps: Step 1: Select a cutting head (1) of the corresponding size according to the size of the upper end of the fiber optic jumper (10), and install the cutting head (1) onto the top cover (3) through the cutting head control assembly (2) so that the upper end of the fiber optic jumper (10) and the head of the cutting head (1) are coaxially set. Step 2: Place the saturable absorbent to be cut on the placement platform (5) and fix it in place; Step 3: Control the cutting head (1) to move down through the cutting head control component (2). The cutting head (1) first cuts the saturable absorber to be cut in the wedge-shaped groove. Then, the cutting head (1) causes the placement platform (5) to open horizontally from the middle to both sides. After that, the cut saturable absorber is attached to the upper end of the fiber optic jumper (10). Step 4: Control the cutting head (1) to move upward through the cutting head control component (2). When the cutting head (1) leaves the placement platform (5), the placement platform (5) returns to its initial state under the action of the elastic element (9), thus completing one cut. Step 5: Replace the fiber optic jumper (10) and adjust the corresponding position of the saturable absorber to be cut and the cutting head (1). Repeat steps 3 and 4 to perform the next cut until the required number of cuts is completed.

9. The method for cutting saturable absorbers of sheet-like nanomaterials according to claim 8, characterized in that: In step 5, adjusting the corresponding position of the saturable absorbent to be cut and the cutting head (1) specifically involves first opening the top cover (3), and then moving the relative position of the support body (61) on the first guide rail (62) and the second guide rail (63) to make the position of the saturable absorbent to be cut correspond to that of the cutting head (1).

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