Intensive laser diffraction correction device

Abstract

The utility model discloses a strong laser diffraction correction device, which relates to the technical field of laser diffraction spot correction, and comprises a mounting assembly, a first clamping assembly, a second clamping assembly, a third clamping assembly, a positioning assembly, a plano-concave cylindrical mirror, a laser emission head and an acousto-optic modulator, the plurality of sliding connecting rods are arranged between the pair of mounting seats, the first clamping assembly, the second clamping assembly and the third clamping assembly are sequentially arranged on the plurality of sliding connecting rods and are in sliding connection with the plurality of sliding connecting rods, the plano-concave cylindrical mirror can be clamped on the second clamping assembly, the laser emission head can be clamped on the first clamping assembly, and the laser emission head can be clamped on the third clamping assembly. The acousto-optic modulator can be clamped on the third clamping assembly, the positioning assembly comprises a graduated scale and a pair of I-shaped frames, and the problem that the relative positions of the cylindrical lens, the laser emission head and the acousto-optic modulator cannot be quickly confirmed when the cylindrical lens is used for laser ovality correction at present is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of laser diffraction spot correction, in particular to a strong laser diffraction correction device. Background Art

[0002] An acousto-optic modulator is a laser modulation device based on the acousto-optic effect. It can modulate parameters such as the intensity, frequency, and phase of a laser. Currently, most laboratories or industries involving lasers use acousto-optic modulators to achieve fast switching, frequency shifting, and intensity modulation of lasers. Although using an acousto-optic modulator has the advantages of fast modulation speed, high diffraction efficiency, and simple structure, after using an acousto-optic modulator, the diffraction spot of the laser will generate ellipticity. If the ellipticity of the diffraction spot is not corrected, it will affect the modulation speed of the acousto-optic modulator. At the same time, during experiments or laser processing, the ellipticity of the diffraction spot will also cause errors in experimental results or problems with product quality and accuracy.

[0003] There are two commonly used ellipticity correction methods in the prior art. One is to set two acousto-optic modulators and place the two acousto-optic modulators orthogonally, so that the two acousto-optic modulators can perform cascaded diffraction on the incident light, thereby achieving the effect of ellipticity correction. The other is to compensate for the divergence angle of the diffraction light generated by the acousto-optic modulator through a cylindrical lens, thereby achieving the effect of ellipticity correction. Among them, the first correction method not only has the problem of high equipment cost, but also due to cascaded diffraction, it will also cause the problem of reduced overall modulation efficiency. The second method can well solve these problems.

[0004] However, when using the second method to correct the diffraction spot currently, there are some problems. For example: when the intensity of the laser emission head changes, it is necessary to reconfirm the position of the laser beam waist according to the intensity of the light source, then move the acousto-optic modulator to the position of the laser beam waist, and finally move the cylindrical lens to the specified position according to the position of the laser beam waist and the parameters of the laser modulator. In this process, it involves the problem of how to quickly confirm the relative positions among the cylindrical lens, the laser emission head, and the acousto-optic modulator. Currently, there is no suitable structure to quickly confirm the relative positions among the cylindrical lens, the laser emission head, and the acousto-optic modulator. In the invention with the application number: CN202111374714.5 and the publication number: CN114200697B, a device for correcting the ellipticity of the diffraction spot of an acousto-optic modulator is disclosed. It sets an acousto-optic modulator and a cylindrical lens, and then compensates for the divergence angle of the diffraction light generated by the acousto-optic modulator through the cylindrical lens. Although this invention can effectively correct the ellipticity of the diffraction spot and realize the correction of the elliptical diffraction spot to a circular spot, when it is in use, there is still the problem of being unable to quickly confirm the relative positions among the cylindrical lens, the laser emission head, and the acousto-optic modulator. Summary of the Invention

[0005] Based on this, in view of the above problems, the present utility model proposes a strong laser diffraction correction device, which solves the problem that when using a cylindrical lens to correct the ellipticity of a laser, the relative positions of the cylindrical lens, the laser emitter, and the acousto-optic modulator cannot be quickly confirmed.

[0006] The technical solution of the present utility model is as follows:

[0007] A strong laser diffraction correction device includes a mounting assembly, a first clamping assembly, a second clamping assembly, a third clamping assembly, a positioning assembly, a plano-concave cylindrical lens, a laser emitter, and an acousto-optic modulator. The mounting assembly includes a pair of mounting seats and a plurality of sliding connecting rods. The plurality of sliding connecting rods are arranged between the pair of mounting seats, and both ends respectively penetrate through the pair of mounting seats and are fixedly connected to the mounting seats;

[0008] The first clamping assembly, the second clamping assembly, and the third clamping assembly are sequentially arranged on the plurality of sliding connecting rods and are slidably connected to the plurality of sliding connecting rods. The plano-concave cylindrical lens can be clamped on the second clamping assembly, the laser emitter can be clamped on the first clamping assembly, and the acousto-optic modulator can be clamped on the third clamping assembly;

[0009] The positioning assembly includes a scale and a pair of I-shaped frames. The scale is arranged on one side of the first clamping assembly, the second clamping assembly, and the third clamping assembly, and is fixedly connected to the pair of mounting seats through the pair of I-shaped frames respectively. The pair of I-shaped frames are respectively fixedly arranged on both sides of the bottom of the scale.

[0010] Preferably, the first clamping assembly includes a first slider, a first connecting member, and a first clamping member. The first slider is sleeved on the plurality of sliding connecting rods and is slidably connected to the plurality of sliding connecting rods. The first connecting member is fixedly arranged on the top of the first slider, and the first clamping member is fixedly arranged on the top of the first connecting member for clamping the laser emitter.

[0011] Preferably, the first clamping member includes a first sliding track, a first double-threaded reverse screw, a first adjusting knob, and a pair of first clamping jaws. The first sliding track is fixedly arranged on the top of the first connecting member. The first double-threaded reverse screw is arranged in the first sliding track, and both ends respectively penetrate through the first sliding track and are rotatably connected to the first sliding track. The first adjusting knob is fixedly arranged at one end of the first double-threaded reverse screw. The bottoms of the pair of first clamping jaws are respectively sleeved on the first double-threaded reverse screw. The first double-threaded reverse screw is provided with a positive thread arranged from the middle of the first double-threaded reverse screw to one end and a reverse thread arranged from the middle of the first double-threaded reverse screw to the other end. One of the first clamping jaws is threadedly connected to the end of the first double-threaded reverse screw with the positive thread, and the other first clamping jaw is threadedly connected to the end of the first double-threaded reverse screw with the reverse thread.

[0012] Preferably, an arc-shaped clamping portion for clamping the laser emitting head is provided on a pair of first clamping jaws, and a first anti-slip pad is provided on one side of the arc-shaped clamping portion in contact with the laser emitting head.

[0013] Preferably, the second clamping assembly includes a second slider, a second connecting member, and a second clamping member. The second slider is sleeved on a plurality of sliding connecting rods and is slidably connected to the plurality of sliding connecting rods. The second connecting member is fixedly provided on the top of the second slider, and the second clamping member is fixedly provided on the top of the second connecting member for clamping the plano-concave cylindrical mirror.

[0014] Preferably, the second clamping member includes a second sliding track, a second double-threaded reverse screw, a second adjusting knob, and a pair of second clamping jaws. The second sliding track is fixedly provided on the top of the second connecting member. The second double-threaded reverse screw is disposed in the second sliding track and respectively penetrates through the two ends of the second sliding track and is rotatably connected to the second sliding track. The second adjusting knob is fixedly provided at one end of the second double-threaded reverse screw. The bottoms of the pair of second clamping jaws are respectively sleeved on the second double-threaded reverse screw. The second double-threaded reverse screw is provided with a positive thread arranged from the middle of the second double-threaded reverse screw to one end and a reverse thread arranged from the middle of the second double-threaded reverse screw to the other end. One of the second clamping jaws is threadedly connected to the end of the second double-threaded reverse screw with the positive thread, and the other second clamping jaw is threadedly connected to the end of the second double-threaded reverse screw with the reverse thread.

[0015] Preferably, the third clamping assembly includes a third slider, a third connecting member, and a third clamping member. The third slider is sleeved on a plurality of sliding connecting rods and is slidably connected to the plurality of sliding connecting rods. The third connecting member is fixedly provided on the top of the third slider, and the third clamping member is fixedly provided on the top of the third connecting member for clamping the acousto-optic modulator.

[0016] Preferably, the third clamping member includes a third sliding track, a third double-threaded reverse screw, a third adjusting knob, and a pair of third clamping jaws. The third sliding track is fixedly provided on the top of the third connecting member. The third double-threaded reverse screw is disposed in the third sliding track and respectively penetrates through the two ends of the third sliding track and is rotatably connected to the third sliding track. The third adjusting knob is fixedly provided at one end of the third double-threaded reverse screw. The bottoms of the pair of third clamping jaws are respectively sleeved on the third double-threaded reverse screw. The third double-threaded reverse screw is provided with a positive thread arranged from the middle of the third double-threaded reverse screw to one end and a reverse thread arranged from the middle of the third double-threaded reverse screw to the other end. One of the third clamping jaws is threadedly connected to the end of the third double-threaded reverse screw with the positive thread, and the other third clamping jaw is threadedly connected to the end of the third double-threaded reverse screw with the reverse thread.

[0017] Preferably, extension rods are provided on the first slider, the second slider, and the third slider, which are cooperatively arranged with the scale. An indicating arrow is provided at the end of the extension rod close to the scale, and the indicating arrow is cooperatively arranged with the scale lines on the scale.

[0018] Preferably, locking bolts are provided at the bottoms of the first slider, the second slider, and the third slider, and one end of the locking bolt can be in contact with and locked to one of the sliding connecting rods.

[0019] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0020] When the present utility model is in use, the laser emitting head can be clamped by the first clamping assembly, the plano-concave cylindrical lens can be clamped by the second clamping assembly, and the acousto-optic modulator can be clamped by the third clamping assembly. Then, the relative distances between the laser emitting head, the plano-concave cylindrical lens, and the acousto-optic modulator can be obtained through calculation. Then, according to the scale on the scale, the first clamping assembly, the second clamping assembly, and the third clamping assembly can be quickly moved to the corresponding positions by hand, so as to quickly confirm the relative positions between the laser emitting head, the plano-concave cylindrical lens, and the acousto-optic modulator, and solve the problem that the relative positions between the cylindrical lens, the laser emitting head, and the acousto-optic modulator cannot be quickly confirmed when using the cylindrical lens for laser ellipticity correction at present. Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of a strong laser diffraction correction device described in an embodiment of the present utility model;

[0022] Figure 2 is a partial structural schematic diagram of a strong laser diffraction correction device described in an embodiment of the present utility model Figure 1 ;

[0023] Figure 3 is the Figure 2 partial enlarged structural schematic diagram at A in the

[0024] Figure 4 is a partial structural schematic diagram of a strong laser diffraction correction device described in an embodiment of the present utility model Figure 2 ;

[0025] Figure 5 is the Figure 4 partial enlarged structural schematic diagram at A in the

[0026] Figure 6 is a partial structural schematic diagram of a strong laser diffraction correction device described in an embodiment of the present utility model Figure 3 ;

[0027] Figure 7is what is described in the embodiments of the present utility model Figure 6 Schematic diagram of the partial enlarged structure at position A in

[0028] Figure 8 is what is described in the embodiments of the present utility model Figure 6 Schematic diagram of the partial enlarged structure at position B in

[0029] Figure 9 is a schematic diagram of the partial structure of a strong laser diffraction correction device described in the embodiments of the present utility model Figure 4 ;

[0030] Explanation of reference numerals:

[0031] 10 - mounting assembly, 100 - mounting base, 101 - sliding connecting rod, 20 - first clamping assembly, 200 - first slider, 201 - first connecting member, 202 - first clamping member, 203 - first sliding track, 204 - first double - threaded reverse screw, 205 - first adjusting knob, 206 - first jaw, 207 - arc - shaped clamping portion, 208 - first anti - slip pad, 30 - second clamping assembly, 300 - second slider, 301 - second connecting member, 302 - second clamping member, 303 - second sliding track, 304 - second double - threaded reverse screw, 305 - second adjusting knob, 306 - second jaw, 307 - second anti - slip pad, 40 - third clamping assembly, 400 - third slider, 401 - third connecting member, 402 - third clamping member, 403 - third sliding track, 404 - third double - threaded reverse screw, 405 - third adjusting knob, 406 - third jaw, 407 - third anti - slip pad, 50 - positioning assembly, 500 - scale, 501 - I - shaped frame, 60 - plano - concave cylindrical mirror, 61 - laser emitting head, 62 - acousto - optic modulator, 70 - extension rod, 71 - indicating arrow, 72 - locking bolt, 73 - mounting table, 74 - connecting plate, 75 - anti - slip foot pad. Detailed implementation manners

[0032] The embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

[0033] Embodiment:

[0034] As Figure 1 shown, in order to solve the above problems, this embodiment discloses a strong laser diffraction correction device, which includes a mounting assembly 10, a first clamping assembly 20, a second clamping assembly 30, a third clamping assembly 40, a positioning assembly 50, a plano - concave cylindrical mirror 60, a laser emitting head 61 and an acousto - optic modulator 62. The mounting assembly 10 includes a pair of mounting bases 100 and a plurality of sliding connecting rods 101. The plurality of sliding connecting rods 101 are arranged between the pair of mounting bases 100, and both ends respectively penetrate through the pair of mounting bases 100 and are fixedly connected to the mounting bases 100;

[0035] The first clamping assembly 20, the second clamping assembly 30, and the third clamping assembly 40 are sequentially arranged on a plurality of sliding connecting rods 101 and are slidably connected to the plurality of sliding connecting rods 101. The plano-concave cylindrical mirror 60 can be clamped on the second clamping assembly 30, the laser emitting head 61 can be clamped on the first clamping assembly 20, and the acousto-optic modulator 62 can be clamped on the third clamping assembly 40;

[0036] The positioning assembly 50 includes a scale 500 and a pair of I-shaped frames 501. The scale 500 is arranged on one side of the first clamping assembly 20, the second clamping assembly 30, and the third clamping assembly 40, and is fixedly connected to a pair of mounting seats 100 through a pair of I-shaped frames 501 respectively. The pair of I-shaped frames 501 are respectively fixedly arranged on both sides of the bottom of the scale 500.

[0037] When the present utility model is in use, the laser emitting head 61 can be clamped by the first clamping assembly 20, the plano-concave cylindrical mirror 60 can be clamped by the second clamping assembly 30, and the acousto-optic modulator 62 can be clamped by the third clamping assembly 40. Then, the relative distances between the laser emitting head 61, the plano-concave cylindrical mirror 60, and the acousto-optic modulator 62 can be obtained through calculation. Then, according to the scale on the scale 500, the first clamping assembly 20, the second clamping assembly 30, and the third clamping assembly 40 can be quickly moved to the corresponding positions by hand, so as to quickly confirm the relative positions between the laser emitting head 61, the plano-concave cylindrical mirror 60, and the acousto-optic modulator 62, and solve the problem that the relative positions between the cylindrical lens, the laser emitting head 61, and the acousto-optic modulator 62 cannot be quickly confirmed when the laser ellipticity is corrected by using the cylindrical lens at present.

[0038] Among them, the plano-concave cylindrical mirror 60 can adopt the plano-concave cylindrical mirror 60 in the prior art that can realize the functions of the present utility model, and its specific parameters can be selected according to the parameters of the laser emitting head 61 and the acousto-optic modulator 62 to be corrected.

[0039] The method for calculating the relative distances between the laser emitting head 61, the plano-concave cylindrical mirror 60, and the acousto-optic modulator 62 can refer to the prior art. This method does not belong to the protection scope of the present utility model, so it will not be described in detail. The present utility model only protects the specific structure for realizing the quick movement and relative position positioning of the laser emitting head 61, the plano-concave cylindrical mirror 60, and the acousto-optic modulator 62 during the diffraction spot ellipticity correction.

[0040] The number of the sliding connecting rods 101 is 3, two are located above, and one is located below.

[0041] Such as Figures 2 to 3As shown, in order to facilitate the clamping of the laser emitting head 61, this embodiment is modified on the basis of the above embodiment. The difference from the above embodiment is that the first clamping assembly 20 includes a first slider 200, a first connecting member 201, and a first clamping member 202. The first slider 200 is sleeved on a plurality of sliding connecting rods 101 and is slidably connected to the plurality of sliding connecting rods 101. The first connecting member 201 is fixedly arranged on the top of the first slider 200, and the first clamping member 202 is fixedly arranged on the top of the first connecting member 201 for clamping the laser emitting head 61.

[0042] Among them, the first clamping member 202 includes a first sliding track 203, a first double-threaded reverse screw 204, a first adjusting knob 205, and a pair of first clamping jaws 206. The first sliding track 203 is fixedly arranged on the top of the first connecting member 201. The first double-threaded reverse screw 204 is arranged in the first sliding track 203, and both ends respectively penetrate through the first sliding track 203 and are rotatably connected to the first sliding track 203. The first adjusting knob 205 is fixedly arranged at one end of the first double-threaded reverse screw 204. The bottoms of the pair of first clamping jaws 206 are respectively sleeved on the first double-threaded reverse screw 204. The first double-threaded reverse screw 204 is provided with a positive thread arranged from the middle of the first double-threaded reverse screw 204 to one end and a reverse thread arranged from the middle of the first double-threaded reverse screw 204 to the other end. One of the first clamping jaws 206 is threadedly connected to the end of the first double-threaded reverse screw 204 with the positive thread, and the other first clamping jaw 206 is threadedly connected to the end of the first double-threaded reverse screw 204 with the reverse thread.

[0043] During use, the first adjusting knob 205 can be rotated by hand, so that the first double-threaded reverse screw 204 rotates, and then the pair of first clamping jaws 206 can approach or move away simultaneously, thereby realizing the clamping and fixing of the laser emitting head 61. The first slider 200 is slidably connected to the plurality of sliding connecting rods 101 and is fixed by friction, and the position of the first clamping assembly 20 and the laser emitting head 61 can be quickly moved, thus facilitating the quick confirmation of the position of the laser emitting head 61.

[0044] Since most of the laser emitting heads 61 in the prior art are cylindrical, in order to facilitate the clamping of the laser emitting head 61, further preferably, the pair of first clamping jaws 206 are provided with arc-shaped clamping portions 207 for clamping the laser emitting head 61, and a first anti-slip pad 208 is arranged on the side of the arc-shaped clamping portion 207 in contact with the laser emitting head 61.

[0045] The first anti-slip pad 208 is made of rubber material. The arrangement of the arc-shaped clamping portion 207 and the first anti-slip pad 208 can effectively clamp the laser emitting head 61 on the first clamping assembly 20.

[0046] Such as Figures 4 to 5As shown in the figure, in order to facilitate the clamping of the plano-concave cylindrical mirror 60, this embodiment is modified based on the above embodiment. The difference from the above embodiment is that the second clamping component 30 includes a second slider 300, a second connecting member 301, and a second clamping member 302. The second slider 300 is sleeved on a plurality of sliding connecting rods 101 and is slidably connected to the plurality of sliding connecting rods 101. The second connecting member 301 is fixedly arranged on the top of the second slider 300, and the second clamping member 302 is fixedly arranged on the top of the second connecting member 301 for clamping the plano-concave cylindrical mirror 60.

[0047] Among them, the second clamping member 302 includes a second sliding track 303, a second double-threaded reverse screw 304, a second adjusting knob 305, and a pair of second clamping jaws 306. The second sliding track 303 is fixedly arranged on the top of the second connecting member 301. The second double-threaded reverse screw 304 is arranged in the second sliding track 303, and both ends respectively penetrate the second sliding track 303 and are rotatably connected to the second sliding track 303. The second adjusting knob 305 is fixedly arranged at one end of the second double-threaded reverse screw 304. The bottoms of the pair of second clamping jaws 306 are respectively sleeved on the second double-threaded reverse screw 304. The second double-threaded reverse screw 304 is provided with a positive thread arranged from the middle of the second double-threaded reverse screw 304 to one end and a reverse thread arranged from the middle of the second double-threaded reverse screw 304 to the other end. One of the second clamping jaws 306 is threadedly connected to the end of the second double-threaded reverse screw 304 with the positive thread, and the other second clamping jaw 306 is threadedly connected to the end of the second double-threaded reverse screw 304 with the reverse thread.

[0048] During use, the second adjusting knob 305 can be rotated by hand, so that the second double-threaded reverse screw 304 rotates, and then the pair of second clamping jaws 306 can approach or move away simultaneously, so as to realize the clamping and fixing of the plano-concave cylindrical mirror 60. The second slider 300 is slidably connected to the plurality of sliding connecting rods 101 and is fixed by friction, and the position of the second clamping component 30 and the plano-concave cylindrical mirror 60 can be quickly moved, so as to facilitate the quick confirmation of the position of the plano-concave cylindrical mirror 60.

[0049] Since the cross-sections of the plano-concave cylindrical mirrors 60 in the prior art are all flat, in order to facilitate the clamping of the plano-concave cylindrical mirror 60, a second anti-slip pad 307 is provided on one side of the pair of second clamping jaws 306 for clamping the plano-concave cylindrical mirror 60.

[0050] The second anti-slip pad 307 is made of rubber material. During use, the setting of the second anti-slip pad 307 can effectively clamp and fix the plano-concave cylindrical mirror 60 on the second clamping component 30.

[0051] As Figures 6 to 7As shown in the figure, in order to facilitate the clamping of the acousto-optic modulator 62, this embodiment is modified on the basis of the above embodiment. The difference from the above embodiment is that the third clamping component 40 includes a third slider 400, a third connecting member 401, and a third clamping member 402. The third slider 400 is sleeved on a plurality of sliding connecting rods 101 and is slidably connected to the plurality of sliding connecting rods 101. The third connecting member 401 is fixedly arranged on the top of the third slider 400, and the third clamping member 402 is fixedly arranged on the top of the third connecting member 401 for clamping the acousto-optic modulator 62.

[0052] Among them, the third clamping member 402 includes a third sliding track 403, a third double-threaded reverse screw 404, a third adjusting knob 405, and a pair of third clamping jaws 406. The third sliding track 403 is fixedly arranged on the top of the third connecting member 401. The third double-threaded reverse screw 404 is arranged in the third sliding track 403, and both ends respectively penetrate through the third sliding track 403 and are rotatably connected to the third sliding track 403. The third adjusting knob 405 is fixedly arranged at one end of the third double-threaded reverse screw 404. The bottoms of the pair of third clamping jaws 406 are respectively sleeved on the third double-threaded reverse screw 404. The third double-threaded reverse screw 404 is provided with a positive thread arranged from the middle of the third double-threaded reverse screw 404 to one end and a reverse thread arranged from the middle of the third double-threaded reverse screw 404 to the other end. One of the third clamping jaws 406 is threadedly connected to the end of the third double-threaded reverse screw 404 with the positive thread, and the other third clamping jaw 406 is threadedly connected to the end of the third double-threaded reverse screw 404 with the reverse thread.

[0053] During use, the third adjusting knob 405 can be rotated by hand, so that the third double-threaded reverse screw 404 rotates, and then the pair of third clamping jaws 406 can approach or move away simultaneously, so as to realize the clamping and fixing of the acousto-optic modulator 62. The third slider 400 is slidably connected to the plurality of sliding connecting rods 101 and is fixed by friction, and the position of the third clamping component 40 and the acousto-optic modulator 62 can be quickly moved, so as to facilitate the quick confirmation of the position of the acousto-optic modulator 62.

[0054] Since most of the outer sides of the acousto-optic modulators 62 in the prior art are flat, therefore, in order to facilitate the clamping of the acousto-optic modulator 62, a third anti-slip pad 407 is provided on one side of the pair of third clamping jaws 406 for clamping the acousto-optic modulator 62.

[0055] The third anti-slip pad 407 is made of rubber material. During use, the setting of the third anti-slip pad 407 can effectively clamp and fix the acousto-optic modulator 62 on the third clamping component 40.

[0056] Such as Figure 6 、 Figure 8 、 Figure 9As shown in the figure, in order to make the relative positions between the laser emitting head 61, the plano-concave cylindrical mirror 60, and the acousto-optic modulator 62 more accurate, this embodiment makes modifications based on the above embodiment. The difference from the above embodiment is that extension rods 70 are provided on the first slider 200, the second slider 300, and the third slider 400 and are arranged in cooperation with the scale 500. An indicating arrow 71 is provided at the end of the extension rod 70 near the scale 500, and the indicating arrow 71 is arranged in cooperation with the scale lines on the scale 500.

[0057] When confirming the position, the relative positions between the laser emitting head 61, the plano-concave cylindrical mirror 60, and the acousto-optic modulator 62 can be more accurately confirmed through the cooperation between the indicating arrow 71 and the scale lines.

[0058] Among them, locking bolts 72 are provided at the bottoms of the first slider 200, the second slider 300, and the third slider 400, and one end of the locking bolt 72 can be in contact and locked with one of the sliding connecting rods 101.

[0059] One end of the locking bolt 72 can pass through the bottoms of the first slider 200, the second slider 300, or the third slider 400 and be in contact and locked with one of the sliding connecting rods 101 located below, so that the first slider 200, the second slider 300, and the third slider 400 can be better fixed.

[0060] For the convenience of placement, this embodiment makes modifications based on the above embodiment. The difference from the above embodiment is that it further includes a mounting table 73 and a connecting plate 74. The connecting plate 74 is arranged between a pair of mounting seats 100 and is fixedly connected to the lower ends of the pair of mounting seats 100 at both ends. The connecting plate 74 is detachably connected to the mounting table 73 through bolts.

[0061] A plurality of anti-slip foot pads 75 are provided at the bottom of the mounting table 73, and the anti-slip foot pads 75 are made of rubber material.

[0062] During use, the setting of the mounting table 73 can facilitate the placement of the correction device of the present utility model on the experimental table, and further facilitate the correction of the ellipticity of the laser spot.

[0063] The present utility model is applicable to use during experiments, and can effectively realize the correction of the ellipticity of the diffraction spot of the strong laser Gaussian laser beam emitted by the laser emitting head 61, so as to obtain a diffraction spot that is more inclined to be circular, and further facilitate improving the accuracy of experimental data. Among them, the laser emitting head 61, the plano-concave cylindrical mirror 60, and the acousto-optic modulator 62 are all replaceable parts and can be selected according to experimental requirements. In the present utility model, the definition of strong laser refers to the laser that meets the required intensity for the experiment.

[0064] The working principle of the present utility model:

[0065] When the utility model is in use, the laser emitting head 61 can be clamped by the first clamping assembly 20, the plano-concave cylindrical mirror 60 can be clamped by the second clamping assembly 30, and the acousto-optic modulator 62 can be clamped by the third clamping assembly 40. Then, the relative distances between the laser emitting head 61, the plano-concave cylindrical mirror 60 and the acousto-optic modulator 62 can be obtained through calculation. Then, according to the scale on the scale 500, the first clamping assembly 20, the second clamping assembly 30 and the third clamping assembly 40 can be quickly moved to the corresponding positions by hand, so as to quickly confirm the relative positions among the laser emitting head 61, the plano-concave cylindrical mirror 60 and the acousto-optic modulator 62.

[0066] The above-described embodiments only represent the specific implementation manners of the utility model, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the patent scope of the utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the utility model.

Claims

1. A strong laser diffraction correction device, characterized in that, It includes an installation component (10), a first clamping component (20), a second clamping component (30), a third clamping component (40), a positioning component (50), a plano-concave cylindrical mirror (60), a laser emitting head (61) and an acousto-optic modulator (62). The installation component (10) includes a pair of mounting seats (100) and a plurality of sliding connecting rods (101). The plurality of sliding connecting rods (101) are arranged between the pair of mounting seats (100), and both ends penetrate through the pair of mounting seats (100) respectively and are fixedly connected to the mounting seats (100). The first clamping component (20), the second clamping component (30) and the third clamping component (40) are sequentially arranged on the plurality of sliding connecting rods (101) and are slidably connected to the plurality of sliding connecting rods (101). The plano-concave cylindrical mirror (60) can be clamped on the second clamping component (30), the laser emitting head (61) can be clamped on the first clamping component (20), and the acousto-optic modulator (62) can be clamped on the third clamping component (40). The positioning component (50) includes a scale (500) and a pair of I-shaped frames (501). The scale (500) is arranged on one side of the first clamping component (20), the second clamping component (30) and the third clamping component (40), and is fixedly connected to the pair of mounting seats (100) respectively through the pair of I-shaped frames (501). The pair of I-shaped frames (501) are respectively fixedly arranged on both sides of the bottom of the scale (500).

2. The strong laser diffraction correction device according to claim 1, characterized in that The first clamping component (20) includes a first slider (200), a first connecting piece (201) and a first clamping piece (202). The first slider (200) is sleeved on the plurality of sliding connecting rods (101) and is slidably connected to the plurality of sliding connecting rods (101). The first connecting piece (201) is fixedly arranged on the top of the first slider (200), and the first clamping piece (202) is fixedly arranged on the top of the first connecting piece (201) for clamping the laser emitting head (61).

3. The strong laser diffraction correction device according to claim 2, characterized in that, The first clamping piece (202) includes a first sliding track (203), a first double-threaded reverse screw (204), a first adjusting knob (205) and a pair of first jaws (206). The first sliding track (203) is fixedly arranged on the top of the first connecting piece (201). The first double-threaded reverse screw (204) is arranged in the first sliding track (203), and both ends penetrate through the first sliding track (203) respectively and are rotatably connected to the first sliding track (203). The first adjusting knob (205) is fixedly arranged at one end of the first double-threaded reverse screw (204). The bottoms of the pair of first jaws (206) are respectively sleeved on the first double-threaded reverse screw (204). The first double-threaded reverse screw (204) is provided with a positive thread arranged from the middle of the first double-threaded reverse screw (204) to one end and a reverse thread arranged from the middle of the first double-threaded reverse screw (204) to the other end. One of the first jaws (206) is threadedly connected to the end of the first double-threaded reverse screw (204) with the positive thread, and the other first jaw (206) is threadedly connected to the end of the first double-threaded reverse screw (204) with the reverse thread.

4. The strong laser diffraction correction device according to claim 3, characterized in that, An arc-shaped clamping portion (207) for clamping the laser emitting head (61) is provided on a pair of first clamping jaws (206), and a first anti-slip pad (208) is provided on the side of the arc-shaped clamping portion (207) in contact with the laser emitting head (61).

5. The strong laser diffraction correction device according to claim 4, characterized in that, The second clamping assembly (30) includes a second slider (300), a second connecting member (301) and a second clamping member (302). The second slider (300) is sleeved on a plurality of sliding connecting rods (101) and is slidably connected to the plurality of sliding connecting rods (101). The second connecting member (301) is fixedly arranged on the top of the second slider (300), and the second clamping member (302) is fixedly arranged on the top of the second connecting member (301) for clamping the plano-concave cylindrical mirror (60).

6. The strong laser diffraction correction device according to claim 5, characterized in that, The second clamping member (302) includes a second sliding track (303), a second double-threaded reverse screw (304), a second adjusting knob (305) and a pair of second clamping jaws (306). The second sliding track (303) is fixedly arranged on the top of the second connecting member (301). The second double-threaded reverse screw (304) is arranged in the second sliding track (303), and both ends respectively penetrate through the second sliding track (303) and are rotatably connected to the second sliding track (303). The second adjusting knob (305) is fixedly arranged at one end of the second double-threaded reverse screw (304). The bottoms of the pair of second clamping jaws (306) are respectively sleeved on the second double-threaded reverse screw (304). A right-hand thread is provided on the second double-threaded reverse screw (304) from the middle to one end, and a left-hand thread is provided from the middle to the other end. One of the second clamping jaws (306) is threadedly connected to the end of the second double-threaded reverse screw (304) with the right-hand thread, and the other second clamping jaw (306) is threadedly connected to the end of the second double-threaded reverse screw (304) with the left-hand thread.

7. The strong laser diffraction correction device according to claim 6, wherein, The third clamping assembly (40) includes a third slider (400), a third connecting member (401) and a third clamping member (402). The third slider (400) is sleeved on a plurality of sliding connecting rods (101) and is slidably connected to the plurality of sliding connecting rods (101). The third connecting member (401) is fixedly arranged on the top of the third slider (400), and the third clamping member (402) is fixedly arranged on the top of the third connecting member (401) for clamping the acousto-optic modulator (62).

8. A high-power laser diffraction correction device according to claim 7, characterized in that, The third clamping member (402) includes a third sliding rail (403), a third double-threaded reverse screw (404), a third adjusting knob (405), and a pair of third jaws (406). The third sliding rail (403) is fixedly arranged on the top of the third connecting member (401). The third double-threaded reverse screw (404) is arranged in the third sliding rail (403), and both ends penetrate through the third sliding rail (403) and are rotatably connected to the third sliding rail (403). The third adjusting knob (405) is fixedly arranged at one end of the third double-threaded reverse screw (404). The bottoms of the pair of third jaws (406) are respectively sleeved on the third double-threaded reverse screw (404). The third double-threaded reverse screw (404) is provided with a right-handed thread arranged from the middle of the third double-threaded reverse screw (404) to one end and a left-handed thread arranged from the middle of the third double-threaded reverse screw (404) to the other end. One of the third jaws (406) is threadedly connected to the end of the third double-threaded reverse screw (404) with the right-handed thread, and the other third jaw (406) is threadedly connected to the end of the third double-threaded reverse screw (404) with the left-handed thread.

9. The strong laser diffraction correction device according to claim 8, characterized in that, The first slider (200), the second slider (300), and the third slider (400) are all provided with an extension rod (70) that cooperates with the scale (500). The end of the extension rod (70) close to the scale (500) is provided with an indicating arrow (71), and the indicating arrow (71) cooperates with the scale lines on the scale (500).

10. A strong laser diffraction correction device according to claim 9, characterized in that, The bottoms of the first slider (200), the second slider (300), and the third slider (400) are all provided with locking bolts (72), and one end of the locking bolt (72) can contact and lock with one of the sliding connecting rods (101).

Images