Chemical laser device with seed injection unstable resonator

Abstract

The invention relates to a chemical laser device with a seed injection unstable resonator. The laser device is provided with the following components successively in the output direction of laser: a plano concave reflector, a Brewster plate, a seed optical gain region, a Brewster plate, a diagram, a planar diffraction grating, a polarizer, a quarter wave plate, a planar total reflection reflector, a planar total reflection reflector, a plano concave back-resonator reflector, an activating media gain region, a scraper mirror and a plano convex front-resonator reflector. According to the laser device of the invention, line selection seed laser is coupled with and injected into an annular-resonator chemical laser amplifier. Competition between a seed laser mode an intrinsic die in the injection amplifying-stage resonator is used for controlling the annular-resonator chemical laser amplifier, thereby realizing line selection output of large-power chemical laser. The chemical laser device has advantages of: high optical beam quality, high energy, effective realization for line selection output of laser, etc. The chemical laser device can be widely applied for the fields of laser material processing, laser physics, laser tag, etc.

Description

technical field [0001] The invention belongs to the field of chemical laser devices, in particular to a seed injection amplified unstable cavity chemical laser. Background technique [0002] Due to the advantages of high power, high efficiency and good atmospheric transmission window, chemical lasers are widely used in industry, medical treatment, scientific research and other fields. At present, most continuous wave chemical lasers such as HF / DF lasers, HBr lasers, CO 2 Lasers, etc. are multi-spectral output, but in actual work, especially in the process of atmospheric transmission, because water vapor has a strong absorption of most laser spectral lines, and some spectral lines of specific wavelengths are in the process of atmospheric transmission There is no strong thermal halo effect due to absorption, which makes the single-line operation of the laser very meaningful. [0003] At present, in the range of chemical lasers, an effective line selection method is to use a ...

AI Technical Summary

Problems solved by technology

However, for high-power chemical lasers, especially lasers that operate continuously for a long time, the high power density in the cavity will still cause damage to the water-cooled grating, which makes it impossible for lasers that operate in this way to achieve stable line selection output.

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