Laser for splitting high power into multiple low power coupling fibers

Abstract

The utility model relates to a laser for splitting high power into a plurality of low-power coupling fibers, which is characterized by comprising an outer shell, a packaged heat sink, a luminous chip, a first lens seat, a second lens seat, a first threaded lens seat, a second threaded lens seat, a first aspheric lens and a second aspheric lens, a plurality of second lens bases are arranged at the bottom in the outer shell and are spatially distributed in parallel, the upper end of each second lens base is connected with a second threaded lens base, and a second aspheric lens is bonded to the designated position of each second threaded lens base through glue; a reflection structure is further arranged in the outer shell, and light beams emitted by the light-emitting chip are reflected on the second aspheric lenses on the second threaded lens bases through the reflection structure. According to the design, the assembly is simple, the number of packaging elements is small, and the production cost is well reduced.

Description

Technical Field

[0001] This utility model relates to the field of fiber laser technology, specifically to a fiber laser that splits a high-power beam into multiple low-power coupled fiber lasers. Background Technology

[0002] Space lasers possess advantages such as compact structure, small size, high energy conversion efficiency, good beam quality, and rapid heat dissipation, and are widely used in various fields such as lighting, communication, medical, and aerospace in special applications. For example, in lighting applications requiring fireproofing, lightning protection, explosion-proofing, and waterproofing, high-power lasers can generate high temperatures and potentially cause fires. Therefore, it is necessary to split the laser beam into multiple low-power lasers. This method can effectively reduce the possibility of fires caused by laser convergence.

[0003] However, current technologies for laser beam splitting mostly employ polarization beam splitters, resulting in complex optical paths and requiring numerous optical components and devices. If beam splitters or coated beam splitting solutions are used, the optical system is susceptible to temperature effects, exhibiting poor stability and easily introducing additional optical path differences. When interacting with atomic (or molecular) systems, these additional optical path differences can lead to phase differences, thereby affecting the noise level of the detection. Therefore, designing a method to split a high-power laser beam into multiple low-power coupled fiber lasers is particularly important to address this issue. Summary of the Invention

[0004] To address the aforementioned problems, this invention designs a method that splits a high-power beam into multiple low-power coupled fiber lasers. By using a parallel spatial beam splitting method, it solves the problem of existing lasers on the market that easily introduce additional optical path differences, thus preventing noise levels from affecting the detection.

[0005] To solve the aforementioned technical problems, this utility model provides a high-power fiber laser beam splitting into multiple low-power coupled fiber lasers. Its features include: a housing, a packaged heat sink, a light-emitting chip, a first mirror mount, a second mirror mount, a first threaded mirror mount, a second threaded mirror mount, a first aspherical lens, and a second aspherical lens. One end of the first mirror mount is fixed to the inner wall of one side of the housing. Several first mirror mounts are arranged from front to back on the inner wall of the housing. The packaged heat sink and the light-emitting chip are installed inside the end of the first mirror mount connected to the housing. A first threaded mirror mount is connected to the other end of the first mirror mount. A first aspherical lens is glued to a designated position on the first threaded lens mount. Several second lens mounts are provided at the bottom of the housing, the number of which is the same as the number of first lens mounts. The several second lens mounts are arranged sequentially from left to right at the bottom of the housing. Each of the several second lens mounts is connected to a second threaded lens mount at its upper end. A second aspherical lens is also glued to a designated position on the second threaded lens mount. The housing is also provided with a reflective structure, through which the light beam emitted by several light-emitting chips is reflected onto the second aspherical lenses on the several second threaded lens mounts.

[0006] Furthermore, the bottom of the outer casing is provided with twelve second mirror mounts, the lower end of each second mirror mount is provided with a threaded structure, the threaded structure at the lower end of each of the twelve second mirror mounts extends out of the outer casing and is connected to a flange structure.

[0007] Furthermore: the reflection structure is a dichroic mirror, with a dichroic mirror installed above each of the twelve second mirror mounts. The twelve dichroic mirrors, from left to right, are the first dichroic mirror, the second dichroic mirror, the third dichroic mirror, the fourth dichroic mirror, the fifth dichroic mirror, the sixth dichroic mirror, the seventh dichroic mirror, the eighth dichroic mirror, the ninth dichroic mirror, the twelfth dichroic mirror, the eleventh dichroic mirror, and the twelfth dichroic mirror. The twelve second mirror mounts are arranged in a staggered manner.

[0008] Furthermore: the connection between the first threaded mirror mount and the first mirror mount is coated with glue, and the threads of the second mirror mount are coated with thread-locking adhesive.

[0009] By adopting the above structure, this utility model solves the problem of existing products on the market that are prone to introducing additional optical path differences and thus affecting the noise level of detection by using parallel spatial beam splitting. Moreover, this design is simple to assemble and has fewer packaged components, which greatly reduces production costs. It also ensures the energy conversion efficiency of the laser when it is used while reducing the use of components and materials. Attached Figure Description

[0010] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0011] Figure 1 This is an exploded view of the parts of this utility model.

[0012] Figure 2 This is a schematic diagram of the optical path of this utility model. Detailed Implementation

[0013] like Figure 1 and Figure 2 The illustrated fiber laser splitting a high-power beam into multiple low-power coupled fiber lasers includes a housing 22, a packaged heat sink 1, a light-emitting chip 2, a first mirror mount 3, a second mirror mount 20, a first threaded mirror mount 4, a second threaded mirror mount 19, a first aspherical lens 5, and a second aspherical lens 18. One end of the first mirror mount is fixed to the inner wall of one side of the housing. Several first mirror mounts are arranged from front to back on the inner wall of the housing. The packaged heat sink and the light-emitting chip are installed in the end of the first mirror mount connected to the housing. A first threaded mirror mount is connected to the other end of the first mirror mount. A first aspherical lens is glued to a designated position on the lens mount. Several second lens mounts, the same number as the first, are arranged sequentially from left to right at the bottom of the housing. Each of the second lens mounts has a second threaded lens mount connected to its upper end. A second aspherical lens is also glued to a designated position on each of the second threaded lens mounts. A reflective structure is also provided within the housing. Light beams emitted by several light-emitting chips are reflected by this structure onto the second aspherical lenses on the second threaded lens mounts. This invention solves the problem of introducing additional optical path differences and affecting the noise level of detection in existing designs by using parallel spatial beam splitting. Furthermore, this design is simple to assemble, requires fewer components, significantly reducing production costs, and maintains high energy conversion efficiency during laser use while minimizing the use of components and materials.

[0014] like Figure 1 The bottom of the housing shown has twelve second mirror mounts. The lower end of each second mirror mount has a threaded structure. The threaded structure at the lower end of each of the twelve second mirror mounts extends out of the housing and is connected to a flange structure 21. The flange structure is an FC / PC flange.

[0015] like Figure 1The reflected structure shown is a dichroic mirror. Each of the twelve second mirror mounts has a dichroic mirror positioned above it. From left to right, the twelve dichroic mirrors are: first dichroic mirror 6, second dichroic mirror 7, third dichroic mirror 8, fourth dichroic mirror 9, fifth dichroic mirror 10, sixth dichroic mirror 11, seventh dichroic mirror 12, eighth dichroic mirror 13, ninth dichroic mirror 14, twelfth dichroic mirror 15, eleventh dichroic mirror 16, and twelfth dichroic mirror 17. The twelve second mirror mounts are arranged in a staggered manner. In this invention, after the light-emitting chip 2 is lit, the first dichroic mirror 6 is adjusted to a 45° angle to reflect 1 / 12 of the total power of the light beam onto the first path. This process is repeated for the subsequent eleven paths, where the remaining eleven dichroic mirrors are adjusted using a staggered arrangement.

[0016] The connection between the first threaded mirror mount and the first mirror mount is coated with glue, and the threads of the second mirror mount are coated with thread-locking adhesive. This design adjusts the light spot by rotating the threaded mirror mount, thereby achieving collimation of the light spot. After the first threaded mirror mount is adjusted, glue is applied to prevent loosening. The application of thread-locking adhesive is to prevent loosening later and to provide a fixing effect.

[0017] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should be considered within its protection scope.

Claims

1. A method of splitting a high power into a plurality of low power coupled fiber lasers, comprising: It includes an outer shell (22), a packaged heat sink (1), a light emitting chip (2), a first mirror seat (3), a second mirror seat (20), a first threaded mirror seat (4), a second threaded mirror seat (19), a first aspherical lens (5) and a second aspherical lens (18), one end of the first mirror seat is fixed on the inner wall of one side of the outer shell, the inner wall of the outer shell is provided with a plurality of first mirror seats from front to back, the end of the first mirror seat connected with the outer shell is provided with a packaged heat sink and a light emitting chip, the other end of the first mirror seat is connected with a first threaded mirror seat, a specified position on the first threaded mirror seat is bonded with a first aspherical lens by glue, the bottom of the outer shell is provided with a plurality of second mirror seats, the number of the second mirror seats is the same as that of the first mirror seats, a plurality of second mirror seats are sequentially arranged on the bottom of the outer shell from left to right, the upper end of each of the plurality of second mirror seats is connected with a second threaded mirror seat, a specified position on the second threaded mirror seat is also bonded with a second aspherical lens by glue, and the outer shell is also provided with a reflection structure, the light beams emitted by the plurality of light emitting chips are reflected on the second aspherical lenses on the plurality of second threaded mirror seats through the reflection structure. ​ 2. The high power beam splitting into multiple low power coupled fiber lasers according to claim 1, wherein: The bottom of the outer shell is provided with twelve second mirror seats, the lower end of the second mirror seat is provided with a threaded structure, and the threaded structure of the lower end of the twelve second mirror seats extends out of the outer shell and is connected with a flange structure (21).

3. The high power beam splitting into multiple low power coupled fiber lasers of claim 2, wherein: The reflection structure is a dichroic mirror, and each of the twelve second mirror seats is provided with a dichroic mirror, and the twelve dichroic mirrors are sequentially arranged from left to right as a first dichroic mirror (6), a second dichroic mirror (7), a third dichroic mirror (8), a fourth dichroic mirror (9), a fifth dichroic mirror (10), a sixth dichroic mirror (11), a seventh dichroic mirror (12), an eighth dichroic mirror (13), a ninth dichroic mirror (14), a twelfth dichroic mirror (15), an eleventh dichroic mirror (16) and a tenth dichroic mirror (17), and the twelve second mirror seats and the twelve second mirror seats are arranged in a front-back staggered manner.

4. The high power beam splitting into multiple low power coupled fiber lasers of claim 1, wherein: The connection between the first threaded mirror seat and the first mirror seat is coated with glue, and the threaded part of the second mirror seat is coated with threaded glue.

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