Line selection ring cavity for chemical laser device

Abstract

The invention relates to a line selection ring cavity for a chemical laser device. The device is in a stable ring cavity structure and is sequentially provided with a blazed grating, a plane mirror, a plane mirror, a plano-concave reflector, a Brewster piece, an activating medium area and a Brewster piece, and a zero level zero level output of the blazed grating is provided with the plane mirrors. According to the laser device provided by the invention, the line selection output of the chemical laser device can be realized by using the zero level, primary diffraction vibration and zero diffraction output. A resonant cavity of the laser device is in either a four-mirror rectangular travelling-wave cavity or a four-mirror '8'-shaped annular travelling-wave cavity, therefore, the laser device can more effectively extract active particles in a gain medium area and the output power of the line selection laser can be improved; furthermore, the line selection ring cavity has the characteristics of compact structure, high power, good beam quality, high stability and the like, thereby being extensively applied to the fields of laser physics, laser chemistry, materials processing and the like.

Description

technical field [0001] The invention belongs to the field of chemical laser devices, and in particular relates to a line selection ring resonant cavity used for chemical laser devices. Background technique [0002] Since the advent of chemical lasers, they have developed rapidly due to their wide application prospects. Chemical lasers have many significant advantages, such as high energy conversion efficiency and output power, and good scalability. They usually work in the mid-infrared band with good atmospheric transmission and rich laser spectral lines. They are the lasers with the highest output power applied so far. Mid-infrared chemical lasers usually operate with multiple lines because the gain coefficients of each spectral line are relatively close. If a certain transition line needs to be selected, a dispersive element needs to be placed in the cavity to suppress the transition of other lines. Because of its good directional diffraction ability, the blazed grating i...

AI Technical Summary

Problems solved by technology

Moreover, most of the current line-selecting lasers use a standing wave cavity structure, which has high noise, high threshold, and poor beam quality.

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