Laser resonance cavity of the combined full reflection mirror with the right-angle interval and external taper

Abstract

This invention discloses one direct angle inner and outer round tamper total reflection lens laser resonance chamber, which comprises total reflection lens, plane output lens and laser work medium, wherein, the reflection lens is of right angle reflection lens and inner lens combination; the right angle outer round surface outer tamper surface and inner lens are as reflection surface; right angle outer round tamper reflection lens and inner lens have central axis lines overlapped with height H larger than zero and less than right angle inner round tamper height.

Description

Technical field [0001] The invention relates to a laser resonant cavity. Background technique [0002] The main problem in the design of high-energy laser devices is how to obtain the largest possible mode volume and good transverse mode discrimination ability to achieve high-energy single-mode operation, so that energy can be extracted from the active material efficiently while maintaining high The beam quality. [0003] Commonly used laser resonant cavities include stable cavity, unstable cavity and critical cavity. [0004] The critical cavity can ensure that energy is effectively extracted from the active material while obtaining a high-quality output beam. [0005] The most commonly used unstable cavity is the virtual confocal unstable cavity. It consists of a concave mirror and a convex mirror. The real focus of the concave mirror coincides with the virtual focus of the convex mirror, and the common focus is outside the cavity. By choosing the size of the mirror, the plane ...

AI Technical Summary

Problems solved by technology

However, this resonator needs to be used in conjunction with a conical total reflection mirror and an integral or split planar output mirror with a ring-shaped total reflection film. Due to the strict size relationship required for this cooperation, the resonator is difficult to manufacture and limits The ability of the resonator to compress the output spot and output the hollow spot

In addition, the light running characteristics of the resonator determine that the resonator is only suitable for the case where the cross-section of the laser medium is circular or ring, and the outer diameter of the ring is larger than the radius of the conical full reflection mirror. For laser media with other cross-section forms, The efficiency of the resonator is reduced

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