A miniaturized high coaxiality laser pump light collimation adjustment structure

Abstract

This invention discloses a miniaturized, high-coaxiality laser pump light collimation adjustment structure, comprising a mirror tube with a flange fixing head at one end for connecting and fixing the pump light output end. The mirror tube contains a multi-stage stepped hole, within which a spring, a collimating mirror, and a threaded retaining ring are sequentially installed from the inside out. The inner wall of the multi-stage stepped hole where the spring and collimating mirror are installed is a smooth inner wall, while the inner wall of the multi-stage stepped hole where the threaded retaining ring is installed is a threaded inner wall. Compared to existing technologies, this invention employs a method that separates collimating mirror displacement adjustment from coaxial limiting. During adjustment, the distance between the collimating mirror and the pump light output end can be changed by rotating the threaded retaining ring and the spring, achieving pump light collimation adjustment. This ensures both compact miniaturization and high coaxiality and high precision.

Description

Technical Field

[0001] This utility model relates to the field of solid-state lasers, specifically to a miniaturized high coaxiality laser pump light collimation adjustment structure. Background Technology

[0002] In solid-state lasers, mode matching between the pump light and the oscillating light is an important condition for achieving laser output. Therefore, the pump light adjustment device is very important for lasers.

[0003] In compact solid-state lasers, due to the limited internal space, the pump beam collimator is typically mounted in the mirror tube using a threaded structure. Due to the characteristics of the threaded fit and installation requirements, the contact between the collimator and the mirror tube is not tight enough, causing the pump beam to be out of axis from the collimator. When the ambient temperature changes, this causes the laser spot to shift in its focused position within the crystal, affecting the laser's output stability. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing compact solid-state lasers, which have limited internal space and often use threaded connections, resulting in insufficient contact between the collimating lens and the lens barrel, misalignment of the pump light and the collimating lens, and easy changes in the focusing position of the light spot. To address these shortcomings, a miniaturized high coaxiality laser pump light collimation adjustment structure is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A miniaturized high coaxiality laser pump light collimation adjustment structure includes a mirror tube. One end of the mirror tube has a flange fixing head for connecting and fixing the pump light output end. A multi-stage stepped hole is formed inside the mirror tube. A spring, a collimating mirror, and a threaded pressure ring are installed sequentially from the inside to the outside of the multi-stage stepped hole. The inner wall of the multi-stage stepped hole where the spring and collimating mirror are installed is a smooth inner wall, and the inner wall of the multi-stage stepped hole where the threaded pressure ring is installed is a threaded inner wall.

[0006] As a further preferred embodiment of this invention, the multi-stage stepped aperture, collimating lens, and pump beam are coaxial.

[0007] As a further preferred embodiment of this utility model, at least one threaded hole for installing a set screw is vertically provided at the multi-stage stepped mounting spring and collimating lens.

[0008] As a further preferred embodiment of this invention, a flange fixing head is formed at one end of the lens barrel for connecting and fixing the pump light output end.

[0009] The miniaturized high coaxiality laser pump light collimation adjustment structure proposed in this invention has the following advantages compared with the prior art: 1. This utility model adopts a collimating lens displacement adjustment and coaxial limit separation method. During the adjustment process, the distance between the collimating lens and the pump light output end can be changed by rotating the threaded pressure ring and the spring, so as to realize the collimation adjustment of the pump light. This ensures both compactness and high coaxiality and high precision. 2. The interior of this utility model adopts a combination of smooth inner wall and threaded inner wall to meet the fitting requirements of different components during installation and use, and to extend the service life of the lens barrel and collimating lens; 3. This utility model uses a threaded pressure ring, which not only enables the displacement adjustment of the collimating lens, but also facilitates the disassembly and replacement of the spring and collimating lens, without increasing the structural space.

[0010] 4. By forming a flange fixing head at the end of the lens barrel away from the threaded pressure ring, the present invention can stably fix and connect to the pump light output end, laying a reliable foundation for the collimating lens and the pump light to be coaxial. Attached Figure Description

[0011] Figure 1 This is a cross-sectional view of the internal structure of this utility model; Figure 2 This is a schematic diagram of the overall structure of this utility model.

[0012] The meanings of the labels in the attached diagram are as follows: 1. Flange fixing head, 2. Lens tube, 3. Spring, 4. Collimating lens, 5. Threaded pressure ring, 6. Set screw. Detailed Implementation

[0013] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0014] Example 1, combined with Figure 1 and 2 A miniaturized, high-coaxiality laser pump light collimation adjustment structure includes a mirror barrel 2. One end of the mirror barrel 2 has a flange fixing head 1 for connecting and fixing the pump light output end. A multi-stage stepped hole is formed inside the mirror barrel 2. A spring 3, a collimating mirror 4, and a threaded retaining ring 5 are sequentially installed in the multi-stage stepped hole from the inside out. The multi-stage stepped hole, collimating mirror 4, and pump light are coaxial. The inner wall of the multi-stage stepped hole where the spring 3 and collimating mirror 4 are installed is set to a smooth inner wall, achieving a tight fit between the collimating mirror 4 and the inner wall of the mirror barrel 2, greatly improving the coaxiality between the pump light output end and the collimating mirror 4, thereby achieving miniaturized, high-coaxiality pump light collimation adjustment. The inner wall of the multi-stage stepped hole where the threaded retaining ring 5 is installed is set to a threaded inner wall. At least one threaded hole for installing a set screw is vertically arranged at the multi-stage stepped hole where the spring 3 and collimating mirror 4 are installed. After the collimating mirror 4 is adjusted, it is secondary fixed by the set screw 6. One end of the lens barrel 2 has a flange fixing head 1, which is used to connect and fix the pump light output end.

[0015] Place the spring 3, collimating lens 4 and threaded pressure ring 5 into the lens barrel 2 in sequence; fix one end of the flange fixing head 1 to the pump light output end to ensure that the output end is coaxial with the collimating lens 4.

[0016] Rotate the threaded pressure ring 5 inward, and the threaded pressure ring 5 pushes the collimating lens 4 to move, compressing the spring 3. The collimating lens 4 moves closer to the pump light output end. Rotate the threaded pressure ring 5 outward, and the spring 3 pushes the collimating lens 4 cylinder 2 to move to one side of the threaded pressure ring 5. The collimating lens 4 moves away from the pump light output end, thus realizing the collimation adjustment of the pump light.

[0017] After adjustment, install the set screw through the threaded hole and align it with the straight mirror 4 for secondary fixation.

[0018] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that the above embodiments do not limit this utility model in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of this utility model.

Claims

1. A miniaturized high coaxiality laser pump light collimation adjustment structure, comprising a mirror tube, characterized in that, The lens barrel has a multi-stage stepped hole, and a spring, a collimating lens, and a threaded pressure ring are installed sequentially from the inside to the outside of the multi-stage stepped hole; the inner wall of the multi-stage stepped hole where the spring and collimating lens are installed is a smooth inner wall, and the inner wall of the multi-stage stepped hole where the threaded pressure ring is installed is a threaded inner wall.

2. The miniaturized high coaxiality laser pump light collimation adjustment structure according to claim 1, characterized in that, The multi-stage stepped aperture, collimating lens, and pump beam are coaxial.

3. The miniaturized high coaxiality laser pump light collimation adjustment structure according to claim 1, characterized in that, At least one threaded hole for installing a set screw is vertically provided at the location where the multi-stage stepped hole is used to install the spring and collimator.

4. The miniaturized high coaxiality laser pump light collimation adjustment structure according to claim 1, characterized in that, A flange fixing head is formed at one end of the lens barrel for connecting and fixing the pump light output end.

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