CN-122000773-A - Lightweight high-power laser system

Abstract

The invention provides a light-weight high-power laser system, which is based on efficient pump source heat dissipation, greatly simplifies a cooling system, integrates driving and light output, and realizes high efficiency and light weight of the system. The laser comprises a pump source system, wherein the pump source system is connected with a driving system and is packaged in a laser shell, the pump source system is provided with a plurality of pump source units, and the pump source units are distributed on two sides of a central axis of the laser shell and are arranged in a straight line direction. The invention has the advantages of compact structure, stable system, good heat dissipation effect and the like.

Inventors

• ZOU JIACHUN
• LIAO XINSHENG
• YAO RONGKANG
• DING MINGXING
• MA XINFENG

Assignees

• 杭州沪宁电梯部件股份有限公司

Dates

Publication Date

20260508

Application Date

20260227

Claims (10)

1. 1. The utility model provides a lightweight high power laser system, includes pump source system (1), pump source system (1) be connected and encapsulation in laser instrument casing (3) with actuating system (2), its characterized in that, pump source system (1) have a plurality of pump source unit (11), pump source unit (11) distribute in the axis both sides of laser instrument casing (3) and arrange along sharp direction.
2. 2. The light-weight high-power laser system according to claim 1, wherein the pump source units (11) are axially arranged at left and right sides and/or front and rear sides of the central axis of the laser housing (3), and the same axially arranged pump source units (11) have equal spacing.
3. 3. A lightweight high power laser system as claimed in claim 1 or 2, characterized in that the drive system (2) has a number of drive units (21), which drive units (21) are connected in correspondence with one or more pump source units (11).
4. 4. The light-weight high-power laser system according to claim 1 or 2, wherein the laser housing (3) is internally provided with optical fiber mounting seats (31) which are in one-to-one correspondence with the pump source units (11) and guide optical fibers to be led out, and the optical fiber mounting seats (31) are long and provided with guide grooves (32) for embedding the optical fibers.
5. 5. A lightweight water cooling system, which is arranged in the lightweight high-power laser system according to any one of claims 1-4, and is characterized by comprising pump source shells (4) which are packaged in one-to-one correspondence with pump source units (11), wherein a water cooling plate (5) for fixing the pump source shells (4) is arranged in the laser shell (3), a water cooling channel (6) connected with an external circulation system is arranged in the water cooling plate (5), and the water cooling channel (6) is communicated with an internal cavity of the pump source shells (4).
6. 6. The light water cooling system according to claim 5, wherein the water cooling plate (5) and the laser housing (3) are integrally formed, and the water cooling plate (5) is provided with a hollowed-out opening.
7. 7. The light water cooling system according to claim 5, wherein the water cooling channels (6) inside the water cooling plate (5) are formed by friction stir processing.
8. 8. The light water cooling system according to claim 5, wherein the pump source shells (4) arranged on the same side of the water cooling plate (5) are arranged in adjacent pairs, one pump source shell (4) is communicated with the water inlet channel of the water cooling channel (6) through a corrugated pipe fitting (7), the other pump source shell (4) is communicated with the water outlet channel of the water cooling channel (6) through the corrugated pipe fitting (7), and the internal cavities of the pump source shells (4) arranged in adjacent pairs are communicated through the telescopic assembly (8).
9. 9. The lightweight water cooling system as claimed in claim 8, wherein the corrugated pipe fitting (7) comprises an outer joint (71) communicated with the pump source housing (4) and an inner joint (72) communicated with the water cooling plate (5), the corrugated pipe (73) is connected between the outer joint (71) and the inner joint (72), the telescopic assembly (8) comprises telescopic joints (81) fixed on the pump source housing (4) and mutually spliced and communicated, and locking nuts (82) are fixed between the telescopic joints (81).
10. 10. The light water cooling system according to claim 5, wherein the laser housing (3) is internally provided with an optical fiber groove (33) extending along the circumferential direction and allowing the optical fiber to be coiled, and the optical fiber groove (33) is communicated with the water cooling channel (6).

Description

Lightweight high-power laser system Technical Field The invention belongs to the technical field of laser systems, and particularly relates to a lightweight high-power laser system. Background In the fields of industrial processing, national defense scientific research and the like, the power improvement of a high-power laser is severely limited by a thermal management bottleneck. The pump source is used as a main heat source, and if the generated heat loss can not be timely and uniformly led out, the temperature of a laser medium is uneven, the quality of a light beam is reduced, the efficiency is attenuated and even the device is damaged. The prior art scheme is often faced with the contradiction that in order to promote heat dissipation, an externally-hung large-sized cooling plate, a complex manifold or a heat dissipation fin is often adopted, but the system is heavy, huge, low in integration level and complex in manufacturing, a plurality of pumping source units are required to be independently fixed on the cooling plate, and even cooling and stability are influenced by the influence of a processing plane or stress deformation or an attaching interface of the cooling plate. The traditional structure has very high requirements on equipment and process technology for high-power lasers in terms of machining quality and precision, and the brazing-formed cooling channel has limitations in terms of shape complexity, sealing reliability, overall strength and rigidity, so that the further optimization of heat dissipation efficiency and lightweight design is restricted. In order to solve the defects existing in the prior art, long-term exploration is performed, and various solutions are proposed. For example, chinese patent literature discloses a pump source system with cooling [202111072836.9] comprising a base, a PBS assembly disposed on the base, an in-fiber coupling assembly, a parasitic light absorption block, and a plurality of groups of optical path module assemblies, wherein openings are disposed below the areas of the base where the PBS assembly and the groups of optical path module assemblies are mounted, for directly contacting the PBS assembly and the groups of optical path module assemblies with a cooling medium. The above solution solves the problem of heat dissipation of the pump source to a certain extent, but the solution still has a plurality of disadvantages, such as low system integration, overall light weight, system layout and the like. Disclosure of Invention The invention aims to solve the problems and provide a light-weight high-power laser system with reasonable design and high integration level. The invention aims to solve the problems and provide a light water cooling system with good heat dissipation effect. In order to achieve the purpose, the light-weight high-power laser system comprises a pump source system, wherein the pump source system is connected with a driving system and is packaged in a laser shell, the pump source system is provided with a plurality of pump source units, and the pump source units are distributed on two sides of a central axis of the laser shell and are arrayed at equal intervals along a straight line direction. The main heat source pumping units are symmetrically and equidistantly arranged along the central axis of the system, a regular structure is created, the length of the cooling plate is reduced by more than 40% relative to the conventional structure, the subsequent water cooling system can cover all heat sources in the shortest and most uniform path, preconditions are created for implementing efficient and balanced integrated cooling, and the manufacturing difficulty and local overheating and thermal stress concentration caused by random heat source positions are fundamentally avoided. In the light-weight high-power laser system, the pump source units are axially arranged on the left side and the right side and/or the front side and the back side of the central axis of the laser shell, and the distances between the pump source units which are axially arranged are equal. The structure can be modularly expanded in three dimensions. The rule of equidistant arrangement is unchanged no matter how the number of the heat sources is increased, and the expandability and the design consistency of the heat management are ensured. In the lightweight high-power laser system, the driving system is provided with a plurality of driving units, and the driving units are correspondingly connected with one or more pump source units. The distributed driving units are correspondingly connected, so that single large-scale centralized driving is replaced, the current load and the heat density of a single circuit are reduced, and the electric conversion efficiency and the reliability are improved. Meanwhile, one-drive-multiple-drive flexible configuration is realized, and the fault tolerance and maintenance convenience of the system power management are enhanced. In the li