Compact laser module

Abstract

The utility model relates to a compact laser module, which comprises a resonant cavity shell, a pumping source and a cable flexible supporting piece, the resonant cavity shell and the pumping source are connected with each other through an optical fiber, a cable flexible supporting piece is arranged between the resonant cavity shell and the pumping source, and the optical fiber is connected with the cable flexible supporting piece. According to the utility model, through the arrangement of the autorotation connecting piece, the fixed connecting piece, the flexible connecting piece and other parts, and through the cooperation of the three parts, the cable flexible supporting piece can be bent, i.e., the maximum bending degree is 180 degrees, so that the pumping source can be arranged outside the resonant cavity shell, and meanwhile, the cable flexible supporting piece can be bent at the same time. The optical fiber is supported to ensure that the optical fiber is not broken, through arrangement of the resonant cavity shell, the cover plate and the autorotation connecting piece, the effect that the cable flexible supporting piece can rotate with the center of the movable groove as the circle center is achieved, the cable flexible supporting piece is matched with the flexible connecting piece, and the position of the pumping source can be flexible and changeable.

Description

Technical Field

[0001] This utility model relates to the field of laser technology, specifically to a compact laser module. Background Technology

[0002] A laser is a device that can reflect laser light. It is used in many fields such as information scanning, fiber optic communication, laser ranging, lidar, laser discs, laser pointers, supermarket checkouts, and medicine.

[0003] Common lasers include structures such as pump source, resonant cavity, working medium and q switch. The resonant cavity contains a total reflection mirror and an output reflection mirror, so that the light generated by the pump source passes through the total reflection mirror and enters the resonant cavity. The light is reflected and amplified by the interaction between the resonant cavity and the working medium before being emitted to form a laser.

[0004] The pump source of the aforementioned laser is usually connected to the resonant cavity and other structures in two ways. One way is that the pump source is directly fixed to the resonant cavity housing, in which case the resonant cavity and the pump source are directly fixed to each other. The other way is that the pump source is simply connected to the resonant cavity through an optical fiber, and the housing of the pump source is set outside the resonant cavity housing.

[0005] The two methods mentioned above each have their advantages and disadvantages. The first method provides a more stable connection, but it is relatively large and requires a large enough installation space, making the installation process less flexible. The second method uses a separate design between the pump source and the resonant cavity housing, allowing the pump source to be installed in other locations, thus making the laser more flexible to install. However, this method is prone to fiber bending or even breakage. Therefore, a compact laser module is proposed to solve the problems mentioned above. Utility Model Content

[0006] Based on the above description, this utility model provides a compact laser module to solve the problems of the two existing laser connection states, which are respectively large in size and inconvenient to install, and easy to break when the optical fiber is bent during installation.

[0007] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: a compact laser module, comprising: a resonant cavity housing, a pump source, and a flexible cable support;

[0008] The resonant cavity housing and the pump source are interconnected by optical fiber, and a flexible cable support is provided between them. The optical fiber is connected to the flexible cable support.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Furthermore, the resonant cavity housing is provided with a coupler, a total reflection mirror, a working medium, a q-switch, and an output reflection mirror arranged sequentially between the light inlet and the light outlet.

[0011] Furthermore, a cover plate is provided on one side of the light inlet of the resonant cavity housing. The cover plate includes a plate body, and a movable groove and a connecting hole are respectively provided on the side of the plate body facing the resonant cavity housing and the side facing away from the resonant cavity housing. The inner diameter of the movable groove is larger than the inner diameter of the connecting hole.

[0012] Furthermore, the flexible cable support includes a self-rotating connector and a fixed connector. The fixed connector is connected to one side surface of the pump source output end. The self-rotating connector is disposed between the resonant cavity housing and the cover plate, and passes through the cover plate and extends to the outside of the cover plate. A flexible connector is disposed between the fixed connector and the self-rotating connector.

[0013] Furthermore, the self-rotating connector includes an annular plate located inside the movable groove. The diameter of the annular plate is larger than the inner diameter of the connecting hole and smaller than the inner diameter of the movable groove. A connecting rod is provided on the side of the annular plate away from the resonant cavity housing, penetrating the connecting hole and extending to the outside of the connecting hole. A connecting post is provided on the side of the connecting rod away from the resonant cavity housing, and a first elastic clamp is provided on the lower surface of the connecting post.

[0014] Furthermore, the surface of the annular plate is provided with threaded holes, and a fixing screw is provided on the side of the annular plate away from the resonant cavity housing. The fixing screw is threadedly connected to the threaded hole and passes through the threaded hole, and is tightly fitted to the surface of the resonant cavity housing facing the cover plate.

[0015] Furthermore, the fixed connector includes a fixed post disposed on one side of the pump source output end, and a second elastic clamp is provided on the upper surface of the fixed post.

[0016] Furthermore, the flexible connector includes multiple connecting blocks, which are distributed equidistantly in a ring along a semi-circular path. Each connecting block has an inclined surface at its four corners and a side block on each side, with adjacent inclined surfaces tightly fitted together.

[0017] Furthermore, each of the two adjacent side blocks is connected by a connecting rope, the two ends of which are connected to a connecting post and a fixing post, respectively, and a third elastic clamp is provided on the side of the connecting block away from the center of the semi-circular path.

[0018] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0019] 1. This utility model sets up components such as a self-rotating connector, a fixed connector, and a flexible connector. Through the cooperation between the above three components, the flexible support of the cable can be bent, that is, bent up to 180 degrees. This allows the pump source to be set outside the resonant cavity shell while supporting the optical fiber and ensuring that the optical fiber will not break.

[0020] 2. By designing the resonant cavity housing, cover plate, and self-rotating connector, the flexible cable support can rotate around the center of the movable slot. This allows the pump source to be positioned outside the resonant cavity housing and work in conjunction with the flexible connector, enabling the pump source to be positioned flexibly. This allows the device to be adjusted according to the installation environment, avoiding the situation where it is too large to install. Attached Figure Description

[0021] Figure 1 A schematic diagram of a compact laser module provided for an embodiment of this utility model;

[0022] Figure 2 for Figure 1 Structural sectional view;

[0023] Figure 3 This is a schematic diagram of the cover plate in an embodiment of the present utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the flexible cable support component in the embodiments of this utility model;

[0025] Figure 5 for Figure 4 Another structural diagram from another perspective;

[0026] Figure 6 This is a schematic diagram of the self-rotating connector in an embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of the flexible connector in an embodiment of the present invention;

[0028] The attached diagram lists the components represented by each number as follows:

[0029] 1. Resonant cavity shell; 2. Pump source; 3. Cover plate; 31. Plate; 32. Communicating hole; 33. Movable groove; 4. Rotating connector; 41. Connecting column; 42. First elastic clamp; 43. Connecting rod; 44. Annular plate; 45. Fixing screw; 5. Fixing connector; 51. Fixing column; 52. Second elastic clamp; 6. Flexible connector; 61. Connecting block; 62. Inclined surface; 63. Side block; 64. Third elastic clamp; 65. Connecting rope; 7. Coupler; 8. Total reflection mirror; 9. Working medium; 10. Q switch; 11. Output reflector. Detailed Implementation

[0030] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0032] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” or “having,” etc., specify the presence of the stated feature, whole, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0033] Please see Figure 1 and Figure 2 A compact laser module includes: a resonant cavity housing 1, a pump source 2, and a flexible cable support;

[0034] The resonant cavity housing 1 and the pump source 2 are interconnected by optical fiber, and a flexible cable support is provided between them. The optical fiber is connected to the flexible cable support. Inside the resonant cavity housing 1, a coupler 7, a total reflection mirror 8, a working medium 9, a q switch 10, and an output reflection mirror 11 are arranged in sequence between the light inlet and the light outlet.

[0035] Based on the above, the coupler 7, total reflection mirror 8, working medium 9, q switch 10, and output reflector 11 inside the resonant cavity housing 1 are all existing technologies. The beam generated by the pump source 2 is coupled through the coupler 7 and enters the interior of the resonant cavity through the total reflection mirror. It is continuously reflected between the total reflection mirror 8 and the output reflector 11. During this process, the beam passes through the working medium and is strengthened. The strengthened beam is output from the light outlet of the resonant cavity housing 1. At this time, the output is laser. The pump source 2 is also a mature existing technology, that is, it generates the initial laser beam.

[0036] like Figures 1-5As shown, the flexible cable support includes a self-rotating connector 4 and a fixed connector 5. The fixed connector 5 is connected to one side surface of the output end of the pump source 2. The self-rotating connector 4 is disposed between the resonant cavity housing 1 and the cover plate 3, and passes through the cover plate 3 and extends to the outside of the cover plate 3. A flexible connector 6 is disposed between the fixed connector 5 and the self-rotating connector 4.

[0037] Based on the above, the flexible cable support plays a role in supporting the optical fiber cable, and because it has flexible characteristics, it can bend along with the optical fiber cable. The flexible support can support the optical fiber cable after bending.

[0038] like Figure 6 As shown, the self-rotating connector 4 includes an annular plate 44 located inside the movable groove 33. The diameter of the annular plate 44 is larger than the inner diameter of the connecting hole 32 and smaller than the inner diameter of the movable groove 33. A connecting rod 43 is provided on the side of the annular plate 44 away from the resonant cavity housing 1, penetrating the connecting hole 32 and extending to the outside of the connecting hole 32. A connecting post 41 is provided on the side of the connecting rod 43 away from the resonant cavity housing 1. A first elastic clamp 42 is provided on the lower surface of the connecting post 41. A threaded hole is provided on the surface of the annular plate 44. A fixing screw 45 is provided on the side of the annular plate 44 away from the resonant cavity housing 1. The fixing screw 45 is threadedly connected to the threaded hole and penetrates the threaded hole, and is tightly fitted to the surface of the resonant cavity housing 1 facing the cover plate 3.

[0039] like Figure 3 As shown, a cover plate 3 is provided on one side of the light inlet of the resonant cavity housing 1. The cover plate 3 includes a plate body 31. The plate body 31 is provided with a movable groove 33 and a connecting hole 32 on the side facing the resonant cavity housing 1 and the side away from the resonant cavity housing 1, respectively. The inner diameter of the movable groove 33 is larger than the inner diameter of the connecting hole 32.

[0040] Based on the above, the cover plate 3 is fixed on one side of the light inlet of the resonant cavity housing 1. At this time, the movable groove 33 and the annular plate 44 cooperate with each other, so that the connecting rod 43 and the connecting column 41 can rotate under the drive of the annular plate 44, that is, rotate around the center of the annular plate 44. After rotation, the positions of the fixed connector 5 and the flexible connector 6 change together. After the position changes, it is fixed by tightening the fixing screw 45. Conversely, after loosening the fixing screw 45, the annular handle 44 can rotate. The first elastic clamp 42 achieves the effect of fixing the optical fiber cable by snapping, so that the optical fiber cable can deform together with the flexible support of the cable.

[0041] like Figure 1 , Figure 2 , Figure 4 , Figure 5 as well as Figure 7 As shown, the fixed connector 5 includes a fixed post 51 disposed on one side of the output end of the pump source 2, and a second elastic clamp 52 is disposed on the upper surface of the fixed post 51;

[0042] The flexible connector 6 includes multiple connecting blocks 61, which are distributed equidistantly in a ring along a semi-circular path. Each connecting block 61 has an inclined surface 62 at its four corners and a side block 63 on both sides. Adjacent inclined surfaces 62 fit tightly together, and adjacent side blocks 63 are connected by a connecting rope 65. The two ends of the connecting rope 65 are connected to a connecting post 41 and a fixing post 51, respectively. A third elastic clamp 64 is provided on the side of the connecting block 61 away from the center of the semi-circular path.

[0043] Based on the above, the second elastic clamp 52 serves to secure and fix the optical fiber cable, allowing the beam generated by the pump source 2 to be transmitted through the optical fiber to the interior of the resonant cavity housing 1. During this process, the flexible connector 6 can bend like a rope, and multiple connecting blocks 61 move together during the bending process. Figure 4 As shown, the bending degree is 180 degrees. After bending, the multiple connecting blocks 61 support each other, and the setting of the connecting rope 65 restricts the connecting blocks 61, so that the movement of the connecting blocks 61 is restricted by the connecting rope 65, thereby ensuring the normal bending of the flexible connector 6.

[0044] The fiber optic cable is secured by the third elastic clamp 64, allowing the cable to deform along with the flexible cable support, which in turn supports the fiber optic cable.

[0045] In summary, the flexible cable support and the cover plate 3 cooperate to allow the pump source 2 to be installed outside the resonant cavity housing 1. This includes fixing the pump source 2 to the upper surface or both sides of the resonant cavity housing 1 by means of adhesive or screws. Since the resonant cavity housing 1 contains multiple components, it is best to ensure that the resonant cavity housing 1 is properly positioned when fixing it. Figure 2 The placement state;

[0046] At this time, by rotating the flexible cable support, the pump source 2 can be placed on the side of the resonant cavity housing 1. Similarly, the pump source 2 can also be separated from the resonant cavity housing 1, and is only connected to the fiber optic cable and the flexible cable support. This increases the flexibility of the laser, allowing it to be adjusted according to the actual situation, avoiding the situation where the laser is too large and inconvenient to install. Furthermore, the flexible cable support supports the fiber optic cable, thus preventing the fiber optic cable from breaking easily when bent.

[0047] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A compact laser module, characterized in that, include: The resonant cavity housing (1), the pump source (2), and the flexible cable support; The resonant cavity housing (1) and the pump source (2) are interconnected by optical fiber, and a flexible cable support is provided between them. The optical fiber is connected to the flexible cable support.

2. The compact laser module according to claim 1, characterized in that, The resonant cavity housing (1) is provided with a coupler (7), a total reflection mirror (8), a working medium (9), a q switch (10), and an output reflection mirror (11) arranged sequentially between the light inlet and the light outlet.

3. The compact laser module according to claim 1, characterized in that, A cover plate (3) is provided on one side of the light inlet of the resonant cavity housing (1). The cover plate (3) includes a plate body (31). The plate body (31) is provided with a movable groove (33) on the side facing the resonant cavity housing (1) and a connecting hole (32) on the side away from the resonant cavity housing (1). The inner diameter of the movable groove (33) is larger than the inner diameter of the connecting hole (32).

4. The compact laser module according to claim 3, characterized in that, The flexible cable support includes a self-rotating connector (4) and a fixed connector (5). The fixed connector (5) is connected to one side surface of the output end of the pump source (2). The self-rotating connector (4) is disposed between the resonant cavity housing (1) and the cover plate (3), and passes through the cover plate (3) and extends to the outside of the cover plate (3). A flexible connector (6) is disposed between the fixed connector (5) and the self-rotating connector (4).

5. The compact laser module according to claim 4, characterized in that, The self-rotating connector (4) includes an annular plate (44) located inside the movable groove (33). The diameter of the annular plate (44) is larger than the inner diameter of the connecting hole (32) and smaller than the inner diameter of the movable groove (33). A connecting rod (43) is provided on the side of the annular plate (44) away from the resonant cavity housing (1), penetrating the connecting hole (32) and extending to the outside of the connecting hole (32). A connecting post (41) is provided on the side of the connecting rod (43) away from the resonant cavity housing (1). A first elastic clamp (42) is provided on the lower surface of the connecting post (41).

6. The compact laser module according to claim 5, characterized in that, The surface of the annular plate (44) is provided with a threaded hole, and a fixing screw (45) is provided on the side of the annular plate (44) away from the resonant cavity housing (1). The fixing screw (45) is threadedly connected to the threaded hole and passes through the threaded hole, and is tightly fitted to the surface of the resonant cavity housing (1) facing the cover plate (3).

7. The compact laser module according to claim 5, characterized in that, The fixed connector (5) includes a fixed post (51) disposed on one side of the output end of the pump source (2), and a second elastic clamp (52) is provided on the upper surface of the fixed post (51).

8. The compact laser module according to claim 7, characterized in that, The flexible connector (6) includes multiple connecting blocks (61), which are distributed equidistantly in a ring along a semi-circular path. Each of the four corners of the connecting block (61) is provided with an inclined surface (62), and each side is provided with a side block (63). The two adjacent inclined surfaces (62) are tightly fitted together.

9. The compact laser module according to claim 8, characterized in that, The two adjacent side blocks (63) are connected by a connecting rope (65). The two ends of the connecting rope (65) are connected to the connecting post (41) and the fixing post (51) respectively. A third elastic clamp (64) is provided on the side of the connecting block (61) away from the center of the semi-circular path.

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