Coaxial reflection type space power synthesis-based high-energy laser system

Abstract

The invention discloses a high-energy laser system based on coaxial reflection type space power synthesis, and belongs to the field of high-energy laser technology and application. The system comprises a laser light source subsystem, a multi-beam combination subsystem, a coaxial reflection subsystem and a control subsystem. The laser light source subsystem is used as system laser energy input and comprises multiple paths of fiber lasers; the multi-beam combining subsystem is used for sequentially carrying out collimation, multi-path pointing adjustment and turning on the multiple paths of laser beams; the coaxial reflection subsystem comprises a coaxial primary reflector and a coaxial secondary reflector, adopts a coaxial reflection type optical system structural form and is used for simultaneously expanding multiple paths of entered laser beams; based on coaxial reflection, focal power adjustment in the system and multi-path adjustment, multiple laser beams are synthesized on a target surface, and the multiple laser beams are focused on a far-field target and synthesized into a light spot, so that the total power to the target is improved, and the operating distance of the system is increased.

Description

Technical Field

[0001] The present invention belongs to the field of high-energy laser technology and applications, and relates to a high-power laser space synthesis system, and in particular to a high-energy laser system based on coaxial reflection space power synthesis. Background Art

[0002] The high-energy laser anti-UAV system uses a beam launch system to launch high-energy lasers onto a target to achieve damage to the target. The laser space power synthesis system is a form of high-energy laser anti-UAV system.

[0003] The laser spatial power synthesis system combines multiple laser beams with different spatial distributions through spatial power synthesis technology. The multiple laser outputs overlap and converge on the final target surface. Without increasing the power level of the laser source, laser spatial power synthesis is an effective way to increase the power density to the target.

[0004] Most of the existing high-energy laser anti-UAV systems have single-channel laser input and output. When the laser source power level is limited, it is difficult to increase the total power to the target. Summary of the invention

[0005] The purpose of the present invention is to solve the problem of low total power reaching the target of the existing high-energy laser anti-UAV system, and to provide a high-energy laser system based on coaxial reflection spatial power synthesis. Through the coaxial reflection subsystem and the multi-beam combining subsystem, the spatial superposition and synthesis of multiple lasers on the target surface is realized, thereby improving the total power reaching the target.

[0006] The objective of the present invention is achieved through the following technical solutions:

[0007] A high-energy laser system based on coaxial reflection space power synthesis, the system comprises a laser light source subsystem, a multi-beam combining subsystem, a coaxial reflection subsystem, and a control subsystem; wherein:

[0008] The laser light source subsystem is used as the system laser energy input, and includes a multi-channel fiber laser;

[0009] The multi-beam combining subsystem is used to collimate, adjust the multi-path direction, and fold the multi-path laser beams in sequence, and includes a laser beam collimation component, a multi-path direction adjustment component, and a folding component;

[0010] The coaxial reflection subsystem includes a coaxial primary reflector and a coaxial secondary reflector, and adopts a coaxial reflection optical system structure to simultaneously expand the incoming multi-path laser beams;

[0011] The control subsystem is used to realize communication and control of laser source, multi-path pointing adjustment, tracking and other functions.

[0012] Furthermore, the laser light source subsystem includes 6 15kW fiber lasers with a laser wavelength between 1030nm and 1080nm and a beam quality of M 2 Less than 6, total input power 90kW.

[0013] Furthermore, the laser beam collimation assembly is a plurality of laser transmission collimation lenses; the laser transmission collimation lenses are composed of two transmission quartz lenses to achieve the collimation of the divergent beam of the laser optical fiber.

[0014] Furthermore, the multi-path pointing adjustment component can adjust the three-dimensional pointing of the multi-path laser light beams; it is composed of three piezoelectric displacement stages stacked together to achieve adjustment in three directions.

[0015] Furthermore, the folding assembly is composed of three reflectors to realize light path folding; the reflector material of the folding assembly is microcrystalline glass.

[0016] Furthermore, the coaxial reflective optical system structure refers to that the reflector surfaces of the coaxial primary reflector and the coaxial secondary reflector are hyperbolic paraboloids, the curvature radius of the coaxial primary reflector is 8000 mm, the curvature radius of the coaxial secondary reflector is 1333 mm, and the reflector body materials are both microcrystalline glass.

[0017] Furthermore, all optical lens surfaces are coated with high-power laser dielectric films.

[0018] Compared with the prior art, the present invention has the following advantages: the laser spatial power synthesis system of the present invention synthesizes multiple laser beams on the target surface based on coaxial reflection, optical focal length adjustment within the system and multi-path adjustment, and realizes focusing of multiple laser beams on a far-field target and synthesizing them into a light spot, which is used to increase the total power to the target, and is beneficial to increasing the system's effective distance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a block diagram of the composition of the coaxial reflection-type space power synthesis high-energy laser system of the present invention;

[0020] Figure 2 It is an optical path diagram of the coaxial reflection type space power synthesis high energy laser system of the present invention;

[0021] Figure 3 The present invention is based on the coaxial reflection type space power synthesis high energy laser system and the output spot distribution and synthesis effect diagram on the target surface. DETAILED DESCRIPTION

[0022] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments, but is not limited thereto. Any modification or equivalent replacement of the technical solution of the present invention that does not depart from the spirit and scope of the technical solution of the present invention should be included in the protection scope of the present invention.

[0023] Embodiment 1:

[0024] A high-energy laser system based on coaxial reflection spatial power synthesis, the system comprises a coaxial reflection subsystem, a laser light source subsystem, a multi-beam combining subsystem, and a control subsystem; wherein:

[0025] The coaxial reflection subsystem includes a coaxial primary reflector and a coaxial secondary reflector, and adopts a coaxial reflection optical system structure to simultaneously expand the incoming multi-path laser beams;

[0026] The laser light source subsystem is used as the laser energy input of the system, including 6 15kW fiber lasers with a total input power of 90kW;

[0027] The multi-beam combining subsystem is used for collimating, adjusting the multi-path pointing and folding the 6-way laser beams, and includes a laser beam collimating component, a multi-path pointing adjusting component and a folding component; the collimating component is 6 laser transmission collimating lenses; the multi-path pointing adjusting component realizes the adjustment of the three-dimensional pointing of the 6-way laser beams; the folding component is composed of three reflectors to realize the folding of the light path;

[0028] The control subsystem is used to realize communication and control of laser source, multi-path pointing adjustment, tracking and other functions.

[0029] like Figure 2 and 3 As shown, a 15kW fiber laser is the input laser for the entire system, and the light is output through a laser beam collimation component, a multi-path pointing adjustment component, a folding reflector 1, a folding reflector 2, a folding reflector 3, a coaxial secondary reflector, and a coaxial primary reflector.

[0030] The coaxial reflective optical system structure refers to that the reflective mirror surfaces of the coaxial primary reflector and the coaxial secondary reflector are hyperbolic paraboloids, the curvature radius of the coaxial primary reflector is 8000mm, the curvature radius of the coaxial secondary reflector is 1333mm, and the reflector body materials are both microcrystalline glass.

[0031] The laser light source subsystem includes 6 15kW fiber lasers with a laser wavelength between 1030nm and 1080nm and a beam quality of M 2 Less than 6.

[0032] The laser transmission collimating lens is composed of two transmission quartz lenses to achieve the collimation of the divergent light beam of the laser optical fiber.

[0033] The multi-path directional adjustment component is formed by stacking three piezoelectric displacement stages to achieve adjustment in three directions.

[0034] The reflector material of the folding assembly is microcrystalline glass.

[0035] All optical lens surfaces are coated with high-power laser dielectric films.

Claims

1. A high-energy laser system based on coaxial reflection spatial power synthesis, characterized by: The system includes a laser light source subsystem, a multi-beam combining subsystem, a coaxial reflection subsystem, and a control subsystem; wherein: The laser light source subsystem is used as the system laser energy input, and includes a multi-channel fiber laser; The multi-beam combining subsystem is used to collimate, adjust the multi-path direction, and fold the multi-path laser beams in sequence, and includes a laser beam collimation component, a multi-path direction adjustment component, and a folding component; The coaxial reflection subsystem includes a coaxial primary reflector and a coaxial secondary reflector, and adopts a coaxial reflection optical system structure to simultaneously expand the incoming multi-path laser beams; The control subsystem is used to realize communication and control of the laser source, multi-path pointing adjustment, and tracking.

2. A high-energy laser system based on coaxial reflection-type spatial power synthesis according to claim 1, characterized in that: The laser light source subsystem includes 6 15kW fiber lasers with a laser wavelength between 1030nm and 1080nm and a beam quality of M 2 Less than 6, total input power 90kW.

3. The high-energy laser system based on coaxial reflection-type spatial power synthesis according to claim 1, characterized in that: The laser beam collimation assembly is a plurality of laser transmission collimation lenses; the laser transmission collimation lenses are composed of two transmission quartz lenses to achieve the collimation of the divergent beam of the laser optical fiber.

4. The high-energy laser system based on coaxial reflection-type spatial power synthesis according to claim 1, characterized in that: The multi-path pointing adjustment component can adjust the three-dimensional pointing of multiple laser beams; it is composed of three piezoelectric displacement stages stacked together to achieve adjustment in three directions.

5. The high-energy laser system based on coaxial reflection-type spatial power synthesis according to claim 1, characterized in that: The folding assembly is composed of three reflectors, and the material is microcrystalline glass.

6. The high-energy laser system based on coaxial reflection-type spatial power synthesis according to claim 1, characterized in that: The coaxial reflective optical system structure refers to that the reflective mirror surfaces of the coaxial primary reflector and the coaxial secondary reflector are hyperbolic paraboloids, the curvature radius of the coaxial primary reflector is 8000mm, the curvature radius of the coaxial secondary reflector is 1333mm, and the reflector body materials are both microcrystalline glass.

7. The high-energy laser system based on coaxial reflection-type spatial power synthesis according to claim 1, characterized in that: All optical lens surfaces are coated with high-power laser dielectric films.

Images