Satellite-borne high-energy dual-wavelength all-solid-state pulse laser

Abstract

The invention provides a satellite-borne high-energy dual-wavelength all-solid-state pulse laser which comprises an active Q-switched oscillator, a pre-power amplifier, a main power amplifier and a frequency multiplication module in sequence. The active Q-switched oscillator is a U-shaped resonant cavity. A first Porro prism, a first optical wedge, a first wave plate, a lath crystal, a first polarization splitting prism, a second polarization splitting prism, an electro-optic Q switch, a second wave plate, a second optical wedge, a second Porro prism and a pumping diode array arranged on the lath crystal, and the pre-power amplifier and the main power amplifier comprise a light beam shaping lens group. According to the invention, high-energy, high-stability and high-reliability pulse laser output can be realized, the size and weight of the laser are reduced, and the laser is suitable for multi-platform application, especially a satellite-borne platform, and can be used as a detection light source for satellite-borne aerosol detection laser radar, satellite-borne ranging laser radar and the like.

Description

technical field [0001] The invention relates to the technical field of lasers, in particular to a spaceborne high-energy dual-wavelength all-solid-state pulsed laser. Background technique [0002] LiDAR is an active remote sensing detection technology. Due to the advantages of high detection accuracy and high resolution, all-weather work, small size and light weight, LiDAR is widely used in ranging, surveying and mapping, and environmental monitoring. Space-borne lidar is a lidar payload applied on satellites or spacecraft, and is currently mainly used in laser ranging and laser remote sensing. The core of spaceborne lidar is its detection source space laser. Due to the particularity of the application environment, the design of space lasers needs to comprehensively consider the harsh space environment, limited satellite resources, and unmaintainability, etc., and special design in terms of reliability, environmental adaptability, weight, volume, power consumption, and com...

AI Technical Summary

Problems solved by technology

[0007] The present invention aims to solve the problem of space-borne miniaturized laser output, and provides a space-borne high-energy dual-wavelength all-solid-state pulsed laser, which uses an orthogonal Paul prism cavity to improve the stability of the optical path, and uses the voltage adjustment of the electro-optical Q switch to realize a resonant cavity Adjust the output coupling transmittance and reduce the working voltage, use two PBS to realize the bending of the optical path, and realize the miniaturization and compactness of the laser

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