A continuously tunable single-frequency fiber laser

Abstract

This utility model relates to the field of laser technology, specifically to a continuously tunable single-frequency fiber laser. It includes a support base, with a connecting plate fixedly connected to one end of the support base. A transmitting tube is fixedly connected to the connecting plate, and an emitter is mounted on the inner wall of one end of the transmitting tube. A protective plate is mounted on the other end of the transmitting tube, and an adjustment component is mounted on one side of the protective plate. The adjustment component is used to adjust the intensity of the laser emitted by the emitter. An amplification component is fixedly connected to the inner wall of the transmitting tube, and the amplification component is used to control the intensity amplification of the laser emitted by the emitter. After the laser is emitted by the emitter, the adjustment component can adjust the laser intensity as needed, while the amplification component controls the amplification of the laser, thereby achieving continuous tunability of the laser intensity. This allows the fiber laser to flexibly meet different needs. Compared with the prior art, this application improves the accuracy of laser output and has high flexibility and tunability.

Description

Technical Field

[0001] This utility model relates to the field of laser technology, and in particular to a continuously tunable single-frequency fiber laser. Background Technology

[0002] A fiber laser is a laser that uses rare-earth-doped glass fiber as the gain medium. Fiber lasers can be developed based on fiber amplifiers: under the action of pump light, a high power density is easily formed in the fiber, causing a "population inversion" of the laser energy level of the laser working material. When a positive feedback loop is appropriately added (forming a resonant cavity), laser oscillation output can be formed.

[0003] Currently, methods for adjusting the laser emitted by fiber lasers include changing the center wavelength of a fiber grating through stress or temperature to achieve tunable single-frequency laser wavelength, using unpumped doped fiber saturable absorbers, and cascaded filter devices. However, these methods generally suffer from drawbacks such as narrow tuning range, high device loss, and high cost. Therefore, this invention proposes a continuously tunable single-frequency fiber laser to reduce the cost of continuously adjustable single-frequency lasers. Utility Model Content

[0004] In view of this, the purpose of this utility model is to propose a continuously tunable single-frequency fiber laser to solve the problem of large loss during the continuous adjustment of single-frequency laser.

[0005] To achieve the above objectives, this utility model provides a continuously tunable single-frequency fiber laser, including a support base, a connecting plate fixedly connected to one end of the support base, an emission tube fixedly connected to the connecting plate, an emitter provided on the inner wall of one end of the emission tube, a protective plate provided on the other end of the emission tube, an adjustment component provided on one side of the protective plate, the adjustment component being used to adjust the intensity of the laser emitted by the emitter, and an amplification component fixedly connected to the inner wall of the emission tube, the amplification component being used to control the intensity amplification of the laser emitted by the emitter.

[0006] Preferably, the adjusting assembly includes a fixed ring rotatably connected to the inner wall of the launch tube, a rotating ring fixedly connected inside the fixed ring, a threaded rod on the rotating ring, a driven gear meshing at one end of the threaded rod, the driven gear being sleeved and connected inside the rotating ring, a set of connecting arms rotatably connected to the driven gear, a refractive plate fixedly connected between the set of connecting arms, a refractive plate fixedly connected at one end of each connecting arm, a limiting arm slidably connected at one end of each connecting arm, and mutual support between the connecting arm and the limiting arm.

[0007] Preferably, the amplification component includes a connecting ring fixedly connected to the inner wall of the launch tube, a fixed seat passing through the connecting ring, a drive arm rotatably connected to one end of the fixed seat, a drive rod rotatably connected to one end of the drive arm, a support plate rotatably connected to one end of the drive rod, a rotating rod fixedly mounted inside the fixed seat, one end of the rotating rod passing through the support plate, a condenser lens fixedly connected to one end of the rotating rod, and a snap-fit ​​ring rotatably fitted onto one end of the support plate.

[0008] Preferably, the condenser lenses can form a complete circle, and the surface of the condenser lenses is made of silver-plated material.

[0009] Preferably, the fixing ring has multiple sets of friction grooves.

[0010] Preferably, a rotating wheel is fixedly connected to the top of the fixed base, and the rotating wheel passes through the launching tube.

[0011] The beneficial effects of this utility model are:

[0012] 1. When adjusting the laser, firstly, rotating the fixed ring drives the threaded rod to rotate synchronously, causing the driven gear to rotate accordingly. This, in turn, drives the connecting arm and the refractive plate to move accordingly, causing changes in the space between the multiple sets of refractive plates, thereby controlling the laser intensity. At the same time, one end of the connecting arm is connected to a limiting arm through a sliding connection, which supports each other and limits their range of motion, preventing damage caused by excessive rotation. In addition, the fixed ring has multiple sets of friction grooves to increase the friction between components, thereby stabilizing the movement of the adjustment assembly. This enables precise adjustment of the laser intensity emitted by the transmitter, providing accurate control for the output of the fiber laser. Furthermore, the operating components are not easily damaged, further reducing the cost of use.

[0013] 2. When controlling the amplification of the laser emitted by the transmitter, the rotating wheel first rotates, which in turn drives the fixed base to rotate. This drives the drive arm to rotate the drive rod, which in turn rotates the locking ring. The rotating rod then rotates accordingly, causing the condenser lens to move accordingly. Furthermore, the surface of the condenser lens is silver-plated, which further concentrates and controls the laser, thereby improving the intensity and focusing ability of the laser emitted by the transmitter. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the new type of adjustment component.

[0017] Figure 3 This is a schematic diagram showing a partial cross-section of the novel launch tube.

[0018] Figure 4 This is a schematic diagram of the amplification component of this utility model.

[0019] The following are marked in the diagram: 1. Support base; 2. Connecting plate; 3. Launch tube; 4. Launcher; 5. Protective plate; 6. Fixed ring; 7. Rotating ring; 8. Threaded rod; 9. Driven gear; 10. Connecting arm; 11. Refraction plate; 12. Limiting arm; 13. Friction groove; 14. Connecting ring; 15. Fixed base; 16. Drive arm; 17. Drive rod; 18. Rotating rod; 19. Condenser lens; 20. Support plate; 21. Rotating wheel; 22. Snap ring. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0021] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0022] like Figures 1-4As shown, a continuously tunable single-frequency fiber laser includes a support base 1, a connecting plate 2 fixedly connected to one end of the support base 1, an emitter tube 3 fixedly connected to the connecting plate 2, an emitter 4 provided on the inner wall of one end of the emitter tube 3, a protective plate 5 provided on the other end of the emitter tube 3, an adjustment component provided on one side of the protective plate 5, the adjustment component being used to adjust the intensity of the laser emitted by the emitter 4, and an amplification component fixedly connected to the inner wall of the emitter tube 3, the amplification component being used to control the amplification of the laser emitted by the emitter 4. When the laser is emitted through the emitter 4, the adjustment component can adjust the laser intensity as needed, while the amplification component controls the amplification of the laser, thereby achieving continuous tunability of the laser intensity. This allows the fiber laser to flexibly respond to different needs, provide precise laser output, and has high flexibility and tunability.

[0023] like Figures 1-3 As shown, the adjustment assembly includes a fixed ring 6 rotatably connected to the inner wall of the emission tube 3. A rotating ring 7 is fixedly connected inside the fixed ring 6. A threaded rod 8 is provided on the rotating ring 7. One end of the threaded rod 8 is engaged with a driven gear 9, which is sleeved and connected inside the rotating ring 7. A set of connecting arms 10 is rotatably connected to the driven gear 9. A refractive plate 11 is fixedly connected between the set of connecting arms 10. A refractive plate 11 is fixedly connected to one end of the connecting arm 10, and a limit arm 12 is slidably connected to one end of the connecting arm 10. The connecting arm 10 and the limit arm 12 support each other. Multiple sets of friction grooves 13 are provided on the fixed ring 6. When adjusting the laser, the threaded rod 8 is driven synchronously by first rotating the fixed ring 6. The rotation causes the driven gear 9 to rotate, which in turn drives the connecting arm 10 and the refractive plate 11 to move accordingly. This causes the space between the multiple sets of refractive plates 11 to change, thereby controlling the laser intensity. At the same time, one end of the connecting arm 10 is connected to the limiting arm 12 through a sliding connection, which supports each other and limits their range of motion to prevent damage caused by excessive rotation. In addition, the fixed ring 6 is provided with multiple sets of friction grooves 13 to increase the friction between the components, thereby stabilizing the movement of the adjustment components. This enables precise adjustment of the laser intensity emitted by the transmitter 4, providing precise control for the output of the fiber laser. Furthermore, the operating components are not easily damaged, further reducing the cost of use.

[0024] like Figure 1 , Figure 3 and Figure 4As shown, the amplification assembly includes a connecting ring 14 fixedly connected to the inner wall of the launch tube 3. A fixed seat 15 passes through the connecting ring 14. A rotating wheel 21 is fixedly connected to the top of the fixed seat 15. The rotating wheel 21 passes through the launch tube 3. A drive arm 16 is rotatably connected to one end of the fixed seat 15. A drive rod 17 is rotatably connected to one end of the drive arm 16. A support plate 20 is rotatably connected to one end of the drive rod 17. A rotating rod 18 is fixedly fixed inside the fixed seat 15. One end of the rotating rod 18 passes through the support plate 20. A condenser lens 19 is fixedly connected to one end of the rotating rod 18. A locking ring 22 is rotatably fitted onto one end of the support plate 20. The condenser lenses 19 can form a complete circle. The surface of the condenser lenses 19 is silver-plated. When the laser emitted by the emitter 4 is amplified, the rotating wheel 21 rotates first, which drives the fixed base 15 to rotate. Then, the drive arm 16 drives the drive rod 17 to rotate, which causes the locking ring 22 to rotate. This causes the rotating rod 18 to rotate, which in turn drives the condenser lenses 19 to move accordingly. Because the surface of the condenser lenses 19 is silver-plated, the laser can be further focused and controlled, thus achieving further focusing and control of the laser emitted by the emitter 4 and improving the intensity and focusing ability of the laser.

[0025] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0026] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A continuously tunable single-frequency fiber laser, characterized in that, Includes a support base (1), one end of which is fixedly connected to a connecting plate (2), and a transmitter tube (3) is fixedly connected to the connecting plate (2). A transmitter (4) is provided on the inner wall of one end of the transmitter tube (3), and a protective plate (5) is provided on the other end of the transmitter tube (3). An adjustment component is provided on one side of the protective plate (5), and the adjustment component is used to adjust the intensity of the laser emitted by the transmitter (4). An amplification component is fixedly connected to the inner wall of the transmitter tube (3), and the amplification component is used to control the amplification of the intensity of the laser emitted by the transmitter (4).

2. The continuously tunable single-frequency fiber laser of claim 1, wherein, The adjustment assembly includes a fixed ring (6) rotatably connected to the inner wall of the launch tube (3), a rotating ring (7) fixedly connected inside the fixed ring (6), a threaded rod (8) provided on the rotating ring (7), a driven gear (9) meshing at one end of the threaded rod (8), the driven gear (9) being sleeved and connected inside the rotating ring (7), a set of connecting arms (10) rotatably connected to the driven gear (9), a refraction plate (11) fixedly connected between the set of connecting arms (10), a refraction plate (11) fixedly connected at one end of the connecting arm (10), a limiting arm (12) slidably connected at one end of the connecting arm (10), and the connecting arm (10) and the limiting arm (12) supporting each other.

3. The continuously tunable single-frequency fiber laser of claim 1, wherein, The amplification component includes a connecting ring (14) fixedly connected to the inner wall of the launch tube (3), a fixed seat (15) passing through the connecting ring (14), a drive arm (16) rotatably connected to one end of the fixed seat (15), a drive rod (17) rotatably connected to one end of the drive arm (16), a support plate (20) rotatably connected to one end of the drive rod (17), a rotating rod (18) fixed inside the fixed seat (15), one end of the rotating rod (18) passing through the support plate (20), a condenser lens (19) fixedly connected to one end of the rotating rod (18), and a snap ring (22) rotatably sleeved on one end of the support plate (20).

4. The continuously tunable single-frequency fiber laser of claim 3, wherein, The condenser lenses (19) can form a complete circle, and the surface of the condenser lenses (19) is made of silver-plated material.

5. The continuously tunable single-frequency fiber laser of claim 2, wherein, Multiple sets of friction grooves (13) are provided on the fixed ring (6).

6. The continuously tunable single-frequency fiber laser of claim 3, wherein, A rotating wheel (21) is fixedly connected to the top of the fixed base (15), and the rotating wheel (21) passes through the launching tube (3).

Images