Wavelength switching output device for laser
By using a drive component to control the movement and rotation of the nonlinear crystal assembly, the laser wavelength is automatically switched. This solves the problems of operational complexity and large equipment size of traditional lasers that output a single wavelength, and realizes convenient and accurate multi-wavelength switching and miniaturized design.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-12
- Publication Date
- 2026-03-31
AI Technical Summary
Traditional lasers output a single wavelength, requiring manual switching of optical components, which leads to complex operation and the risk of misoperation. The large size of the equipment also limits its application in space-constrained environments.
The system employs first and second nonlinear crystal components, and drives the transmission components through a driving component to realize the movement and rotation of the crystal components, automatically switching the laser wavelength. It also utilizes incomplete gears to achieve asynchronous rotation, thereby reducing the size of the equipment.
It improves the convenience and accuracy of wavelength switching, reduces equipment size, and expands application scenarios.
Smart Images
Figure CN224067116U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of laser equipment technology, and in particular to a wavelength switching output device for lasers. Background Technology
[0002] In modern laser technology, the wavelength requirements for lasers are extremely stringent, as different applications necessitate specific wavelengths of laser output. Traditional lasers primarily output a single wavelength, which limits their application in multi-wavelength scenarios. While a few manufacturers have begun developing lasers capable of outputting different wavelengths, these devices typically require users to manually switch optics to achieve wavelength changes. This manual switching not only increases operational complexity but can also lead to errors and time delays during wavelength switching, thus impacting overall work efficiency. Furthermore, existing equipment is often bulky and space-consuming, limiting its use in applications with strict space constraints. These problems urgently need to be addressed. Utility Model Content
[0003] This utility model discloses a wavelength switching output device for lasers, which aims to solve the technical problems existing in the prior art.
[0004] The present invention adopts the following technical solution:
[0005] This invention provides a wavelength switching output device for a laser, comprising a mounting base, a driving component, a first transmission component, a second transmission component, a first nonlinear crystal assembly, and a second nonlinear crystal assembly. The first and second nonlinear crystal assemblies are movably mounted on the mounting base, and during movement, the first and second nonlinear crystal assemblies may overlap or not overlap in the light propagation direction, so that the laser can pass through the first and / or second nonlinear crystal assemblies. The driving component is used to drive the first nonlinear crystal assembly to move via the first transmission component, and to drive the second nonlinear crystal assembly to move via the second transmission component.
[0006] In the wavelength switching output device for lasers of this invention, the first nonlinear crystal assembly and the second nonlinear crystal assembly are respectively rotatably mounted on the mounting base.
[0007] In the wavelength switching output device for a laser of this invention, the first transmission component includes a first driving gear and a first driven gear; the first driving gear is mounted on the rotating shaft of the driving component; the first driven gear meshes with the first driving gear and is mounted on the first rotating shaft of the first nonlinear crystal assembly; the second transmission component includes a second driving gear and a second driven gear; the second driving gear is mounted on the rotating shaft of the driving component; the second driven gear meshes with the second driving gear and is mounted on the second rotating shaft of the second nonlinear crystal assembly; the first driving gear, the first driven gear, the second driving gear, and the second driven gear have the same specifications; the first driving gear and the second driving gear are both incomplete gears, and the missing tooth areas do not coincide axially, so that the first nonlinear crystal assembly and the second nonlinear crystal assembly do not rotate simultaneously, so that the laser can pass through the first nonlinear crystal assembly and / or the second nonlinear crystal assembly.
[0008] In the wavelength switching output device for lasers of this invention, the missing tooth area of the first drive gear is 1 / 4 of the gear; the missing tooth area of the second drive gear is 3 / 4 of the gear; the second nonlinear crystal assembly includes two nonlinear crystals that are symmetrical about the rotation axis.
[0009] In the wavelength switching output device for a laser of this utility model, the first nonlinear crystal assembly includes a first rotating shaft, a first mounting component, and a first nonlinear crystal; the first rotating shaft is rotatably mounted on the mounting base; the first nonlinear crystal is located on one side of the rotation axis of the first rotating shaft and is connected to the first rotating shaft through the first mounting component.
[0010] In the wavelength switching output device for laser of this utility model, the first nonlinear crystal assembly further includes a first butterfly spring and a first nut; the first rotating shaft is a stepped shaft, and the small diameter end protrudes from the mounting base and is screwed to the first nut; the first butterfly spring abuts between the first nut and the mounting base.
[0011] In the wavelength switching output device for a laser of this utility model, the first mounting component includes a first mounting groove and a first cover plate; the first mounting groove is mounted on the first rotating shaft and has a structure that extends through both sides; the first cover plate is disposed at the opening of the first mounting groove to form a mounting channel for mounting the first nonlinear crystal.
[0012] In the wavelength switching output device for a laser of this invention, the second nonlinear crystal assembly includes a second rotating shaft, a second mounting component, and a second nonlinear crystal; the second rotating shaft is rotatably mounted on the mounting base; the second nonlinear crystal is located on one side of the rotation axis of the second rotating shaft and is connected to the second rotating shaft through the second mounting component.
[0013] In the wavelength switching output device for laser of this utility model, the second nonlinear crystal component further includes a second butterfly spring and a second nut; the second rotating shaft is a stepped shaft, and the small diameter end protrudes from the mounting base and is screwed to the second nut; the second butterfly spring abuts between the second nut and the mounting base.
[0014] In the wavelength switching output device for a laser of this utility model, the second mounting component includes a second mounting groove and a second cover plate; the second mounting groove is mounted on the second rotating shaft and has a structure that extends through both sides; the second cover plate is disposed at the opening of the second mounting groove to form a mounting channel for mounting the second nonlinear crystal.
[0015] In the wavelength switching output device for lasers of this invention, the first nonlinear crystal assembly and / or the second nonlinear crystal assembly have multiple nonlinear crystals.
[0016] The technical solution adopted in this utility model can achieve the following beneficial effects:
[0017] This invention mainly provides a wavelength switching output device for lasers. Based on the configuration of a first nonlinear crystal component and a second nonlinear crystal component, the input laser can be processed by the first and / or second nonlinear crystal components to output lasers of different wavelengths. The switching is driven by a driving component, which improves the convenience and accuracy of switching and increases the switching efficiency. The method of driving the first and second transmission components with a single driving component reduces the size of the device, making the device applicable to more application scenarios. Attached Figure Description
[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below, forming part of this utility model. The illustrative embodiments of this utility model and their descriptions explain this utility model and do not constitute an improper limitation of this utility model. In the accompanying drawings:
[0019] Figure 1 This is one of the structural schematic diagrams of a wavelength switching output device for a laser according to the present invention;
[0020] Figure 2 This is a second schematic diagram of the structure of a wavelength switching output device for a laser according to the present invention;
[0021] Figure 3 This is the third schematic diagram of the structure of a wavelength switching output device for a laser according to the present invention;
[0022] Figure 4 This is one of the structural schematic diagrams of a wavelength switching output device for a laser in operation according to this utility model;
[0023] Figure 5 This is the second schematic diagram of the structure of a wavelength switching output device for a laser in operation according to this utility model;
[0024] Figure 6 This is the third schematic diagram of the structure of a wavelength switching output device for a laser in operation according to this utility model;
[0025] Figure 7 This is the fourth schematic diagram of the structure of a wavelength switching output device for a laser in operation according to this utility model.
[0026] Explanation of reference numerals in the attached figures:
[0027] 1. Mounting base; 2. Driving component; 3. First transmission component; 31. First driving gear; 32. First driven gear; 4. Second transmission component; 41. Second driving gear; 42. Second driven gear; 5. First nonlinear crystal assembly; 51. First rotating shaft; 52. First mounting component; 521. First mounting groove; 522. First cover plate; 53. First nonlinear crystal; 54. First butterfly spring; 55. First nut; 6. Second nonlinear crystal assembly; 61. Second rotating shaft; 62. Second mounting component; 621. Second mounting groove; 622. Second cover plate; 63. Second nonlinear crystal; 64. Second butterfly spring; 65. Second nut. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. In the description of this utility model, it should be noted that the term "or" is generally used to include the meaning of "and / or," unless otherwise expressly stated otherwise.
[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or a magnetic connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in the description of this application, the terms "first," "second," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, "a plurality of" means at least two, such as two, three, or more, unless otherwise explicitly specified.
[0030] Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0031] To address the problems existing in the prior art, this application provides a wavelength switching output device for a laser.
[0032] like Figure 1 As shown, a wavelength switching output device for a laser includes a mounting base 1, a driving component 2, a first transmission component 3, a second transmission component 4, a first nonlinear crystal assembly 5, and a second nonlinear crystal assembly 6. The first nonlinear crystal assembly 5 and the second nonlinear crystal assembly 6 are movably mounted on the mounting base 1, and during movement, the first nonlinear crystal assembly 5 and the second nonlinear crystal assembly 6 may overlap or not overlap in the light propagation direction, so that the laser can pass through the first nonlinear crystal assembly 5 and / or the second nonlinear crystal assembly 6. The driving component 2 is used to drive the first nonlinear crystal assembly 5 to move through the first transmission component 3, and to drive the second nonlinear crystal assembly 6 to move through the second transmission component 4, such as driving the first nonlinear crystal assembly 5 and the second nonlinear crystal assembly 6 to move linearly or rotate. Optionally, the first nonlinear crystal assembly 5 and the second nonlinear crystal assembly 6 can be frequency doubling crystals, sum-frequency crystals, etc.
[0033] This invention discloses a wavelength switching output device for a laser. It is based on a first nonlinear crystal component 5 and a second nonlinear crystal component 6, allowing externally input laser light to be processed by the first nonlinear crystal component 5 and / or the second nonlinear crystal component 6 to output laser light of different wavelengths. Furthermore, the use of a driving component 2 for driving the switching improves the convenience and accuracy of the switching, thus increasing the switching efficiency. The use of a single driving component 2 to drive the first transmission component 3 and the second transmission component 4 reduces the device size, making the device applicable to a wider range of applications.
[0034] In some preferred embodiments, the first nonlinear crystal assembly 5 and the second nonlinear crystal assembly 6 are rotatably mounted on the mounting base 1, respectively. This rotatable connection configuration further reduces the device size. Preferably, the first nonlinear crystal assembly 5 and / or the second nonlinear crystal assembly 6 have multiple nonlinear crystals, which are spaced apart around the rotation axis of the first nonlinear crystal assembly 5 or the second nonlinear crystal assembly 6. Some of the nonlinear crystals on the first nonlinear crystal assembly 5 and the second nonlinear crystal assembly 6 overlap axially, while others do not. During rotation, the laser passes through the nonlinear crystals on the first nonlinear crystal assembly 5 and / or the second nonlinear crystal assembly 6, thereby achieving output at different wavelengths.
[0035] In some preferred embodiments, the first nonlinear crystal assembly 5 and / or the second nonlinear crystal assembly 6 have multiple nonlinear crystals; thereby enabling more wavelength outputs.
[0036] In some preferred embodiments, such as Figure 1 and Figure 2As shown, the first transmission component 3 includes a first driving gear 31 and a first driven gear 32; the first driving gear 31 is mounted on the rotating shaft of the driving component 2; the first driven gear 32 meshes with the first driving gear 31 and is mounted on the first rotating shaft 51 of the first nonlinear crystal assembly 5; the second transmission component 4 includes a second driving gear 41 and a second driven gear 42; the second driving gear 41 is mounted on the rotating shaft of the driving component 2; the second driven gear 42 meshes with the second driving gear 41 and is mounted on the second rotating shaft 61 of the second nonlinear crystal assembly 6; the first driving gear 31, the first driven gear 32, the second driving gear 41, and the second driven gear 42 have the same specifications; both the first driving gear 31 and the second driving gear 41 are incomplete gears, and the missing tooth area is axially... The first nonlinear crystal component 5 and the second nonlinear crystal component 6 do not overlap, thus the first nonlinear crystal component 5 and the second nonlinear crystal component 6 do not rotate simultaneously, so that the laser can pass through the first nonlinear crystal component 5 and / or the second nonlinear crystal component 6; based on setting the first drive gear 31 and the second drive gear 41 as incomplete gears, the first nonlinear crystal component 5 and the second nonlinear crystal component 6 can rotate asynchronously, thus realizing that the first nonlinear crystal component 5 and the second nonlinear crystal component 6 overlap or do not overlap in the light propagation direction during rotation, which can reduce the number of nonlinear crystals set, further reduce the size of the device, and realize the output of multi-wavelength laser; preferably, the rotation axes of the first driven gear 32 and the second driven gear 42 are collinear and parallel to the rotation axis of the drive component 2.
[0037] Preferably, the missing tooth area of the first drive gear 31 is 1 / 4 of the gear; the missing tooth area of the second drive gear 41 is 3 / 4 of the gear; the second nonlinear crystal assembly 6 includes two nonlinear crystals symmetrical about the rotation axis; under this arrangement, the wavelength switching output device for lasers of this invention operates as follows:
[0038] Taking the first nonlinear crystal component 5 as an example, a frequency doubling crystal A is set; the second nonlinear crystal component 6 includes two frequency doubling crystals B and C that are symmetrical about the rotation axis, wherein the frequency doubling crystal A is a second frequency doubling crystal, the frequency doubling crystal B is a third frequency doubling crystal, the frequency doubling crystal C is a fourth frequency doubling crystal, and the input laser wavelength is 1064nm;
[0039] In the initial state, such as Figure 4 As shown, frequency doubling crystal A and frequency doubling crystal B coincide along the direction of light propagation. If they are both vertically upward, this setting is only for illustrative purposes and can be set to other orientations as needed. At this time, the laser does not pass through any frequency doubling crystal, and the output laser wavelength is 1064nm.
[0040] The driving component 2 drives the first driving gear 31 and the first driven gear 32 to rotate, causing the frequency doubling crystal A to rotate 90 degrees in its initial state. Figure 5As shown; during this process, the second driving gear 41 and the second driven gear 42 do not mesh, so the positions of the frequency doubling crystals B and C remain unchanged; the laser passes through the frequency doubling crystal A, and the laser wavelength changes from 1064nm to 532nm;
[0041] Driven component 2 continues to operate. The first drive gear 31 and the first driven gear 32 are not meshed, therefore, their positions remain unchanged. The second drive gear 41 meshes with the second driven gear 42 and rotates, causing the frequency doubling crystals B and C to rotate 90°. At this time, the laser passes through the frequency doubling crystals A and B, as shown in the image. Figure 6 As shown, the laser wavelength changes from 1064nm to 355nm;
[0042] Driven component 2 continues to operate. The first drive gear 31 and the first driven gear 32 are not meshed, therefore, their positions remain unchanged. The second drive gear 41 meshes with the second driven gear 42 and rotates, causing the frequency doubling crystals B and C to rotate 180°. At this time, the laser passes through the frequency doubling crystals A and C, as shown in the image. Figure 7 As shown, the laser wavelength changes from 1064nm to 266nm;
[0043] Drive unit 2 continues to operate, rotating 1080°, and all devices reset.
[0044] In some preferred embodiments, the first nonlinear crystal assembly 5 includes a first rotating shaft 51, a first mounting member 52, and a first nonlinear crystal 53; the first rotating shaft 51 is rotatably mounted on the mounting base 1; the first nonlinear crystal 53 is located on one side of the rotation axis of the first rotating shaft 51 and is connected to the first rotating shaft 51 through the first mounting member 52.
[0045] Preferably, the first nonlinear crystal assembly 5 further includes a first butterfly spring 54 and a first nut 55; the first rotating shaft 51 is a stepped shaft, and the small-diameter end protrudes from the mounting base 1 and is screwed to the first nut 55; the first butterfly spring 54 abuts between the first nut 55 and the mounting base 1; the friction between the first butterfly spring 54 and the mounting base 1 can be adjusted by the first nut 55 to prevent the first mounting component 52 and the first nonlinear crystal 53 from rotating due to gravity in the non-driving state.
[0046] In some preferred embodiments, the first mounting component 52 includes a first mounting groove 521 and a first cover plate 522; the first mounting groove 521 is mounted on the first rotating shaft 51 and has a through-structure on both sides, and the extension direction of the first mounting groove 521 is in the same direction as the axial direction of the first rotating shaft 51; the first cover plate 522 is disposed in the groove of the first mounting groove 521, such as being detachably connected, screwed or snapped, etc., to form a mounting channel for mounting the first nonlinear crystal 53; based on this, it is convenient to replace the first nonlinear crystal 53.
[0047] In some preferred embodiments, the second nonlinear crystal assembly 6 includes a second rotating shaft 61, a second mounting member 62, and a second nonlinear crystal 63; the second rotating shaft 61 is rotatably mounted on the mounting base 1; the second nonlinear crystal 63 is located on one side of the rotation axis of the second rotating shaft 61 and is connected to the second rotating shaft 61 through the second mounting member 62.
[0048] Preferably, the second nonlinear crystal assembly 6 further includes a second butterfly spring 64 and a second nut 65; the second rotating shaft 61 is a stepped shaft, and the small-diameter end protrudes from the mounting base 1 and is screwed to the second nut 65; the second butterfly spring 64 abuts between the second nut 65 and the mounting base 1; the friction between the second butterfly spring 64 and the mounting base 1 can be adjusted by the second nut 65 to prevent the second mounting component 62 and the second nonlinear crystal 63 from rotating due to gravity in the non-driving state.
[0049] In some preferred embodiments, the second mounting member 62 includes a second mounting groove 621 and a second cover plate 622; the second mounting groove 621 is mounted on the second rotating shaft 61 and has a through-structure on both sides, and the extension direction of the second mounting groove 621 is in the same direction as the axial direction of the second rotating shaft 61; the second cover plate 622 is disposed in the groove of the second mounting groove 621 to form a mounting channel for mounting the second nonlinear crystal 63; based on this, it is convenient to replace the second nonlinear crystal 63.
[0050] In some preferred embodiments, the drive element 2 is a motor, such as a servo motor or a stepper motor.
[0051] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of the present invention.
Claims
1. A wavelength-switched output apparatus for a laser, characterized by, The wavelength switching output device for laser comprises a mounting base, a driving member, a first transmission member, a second transmission member, a first nonlinear crystal assembly and a second nonlinear crystal assembly. The first nonlinear crystal assembly and the second nonlinear crystal assembly are movably mounted on the mounting base, and coincide or do not coincide in the light propagation direction during movement, so that laser can pass through the first nonlinear crystal assembly and / or the second nonlinear crystal assembly. The driving member is used to drive the first nonlinear crystal assembly to move through the first transmission member, and is used to drive the second nonlinear crystal assembly to move through the second transmission member.
2. The wavelength switching output device for laser according to claim 1, wherein the first nonlinear crystal assembly and the second nonlinear crystal assembly are rotatably mounted on the mounting base.
3. The wavelength switching output device for laser according to claim 2, wherein the first transmission member comprises a first driving gear and a first driven gear; the first driving gear is mounted on the rotating shaft of the driving member; the first driven gear is engaged with the first driving gear and is mounted on the first rotating shaft of the first nonlinear crystal assembly; the second transmission member comprises a second driving gear and a second driven gear; the second driving gear is mounted on the rotating shaft of the driving member; the second driven gear is engaged with the second driving gear and is mounted on the second rotating shaft of the second nonlinear crystal assembly; the first driving gear, the first driven gear, the second driving gear and the second driven gear are of the same specification; the first driving gear and the second driving gear are both incomplete gears, and the toothless regions thereof do not coincide in the axial direction, so that the first nonlinear crystal assembly and the second nonlinear crystal assembly do not rotate at the same time, so that laser can pass through the first nonlinear crystal assembly and / or the second nonlinear crystal assembly.
4. The wavelength switching output device for laser according to claim 3, wherein the toothless region of the first driving gear is 1 / 4 of the gear; the toothless region of the second driving gear is 3 / 4 of the gear; the second nonlinear crystal assembly comprises two nonlinear crystals which are symmetric about the rotating shaft. The first nonlinear crystal assembly comprises a first rotating shaft, a first mounting member and a first nonlinear crystal; the first rotating shaft is rotatably mounted on the mounting base; the first nonlinear crystal is located on one side of the rotating axis of the first rotating shaft and is connected with the first rotating shaft through the first mounting member.
5. The wavelength-switched output apparatus for a laser as claimed in claim 3, wherein, The first nonlinear crystal assembly further comprises a first butterfly-shaped spring and a first nut; the first rotating shaft is a stepped shaft, and the small-diameter side end thereof passes through the mounting base and is screwed with the first nut; the first butterfly-shaped spring is abutted between the first nut and the mounting base.
6. The wavelength-switched output apparatus for a laser as claimed in claim 5, characterized by, The first mounting member comprises a first mounting groove and a first cover plate; the first mounting groove is mounted on the first rotating shaft and has a through structure on both sides; the first cover plate is mounted on the first mounting groove.
7. The wavelength-switched output apparatus for a laser as described in claim 5, wherein, The first cover plate is arranged at the slot of the first mounting groove to form a mounting channel for mounting the first nonlinear crystal.
8. The wavelength-switched output apparatus for a laser as described in claim 3, wherein, The second nonlinear crystal assembly comprises a second rotating shaft, a second mounting member and a second nonlinear crystal. The second rotating shaft is rotatably arranged in the mounting base. The second nonlinear crystal is arranged at one side of the rotating axis of the second rotating shaft and connected with the second rotating shaft through the second mounting member.
9. The wavelength-switched output apparatus for a laser as claimed in claim 8, characterized by, The second nonlinear crystal assembly further comprises a second butterfly spring and a second nut. The second rotating shaft is a stepped shaft, and the small-diameter end of the second rotating shaft is screwed with the second nut after penetrating through the mounting base. The second butterfly spring is arranged between the second nut and the mounting base.
10. The wavelength-switched output apparatus for a laser as claimed in claim 8, characterized by, The second mounting member comprises a second mounting groove and a second cover plate. The second mounting groove is arranged in the second rotating shaft and has a through structure. The second cover plate is arranged at the slot of the second mounting groove to form a mounting channel for mounting the second nonlinear crystal.
11. The wavelength-switched output apparatus for a laser as described in claim 1, wherein, The first nonlinear crystal assembly and / or the second nonlinear crystal assembly comprises a plurality of nonlinear crystals.