Laser for improving asymmetric light spot output

Abstract

A laser for improving asymmetric light spot output relates to the technical field of lasers, and the problem of asymmetric laser output light spot of the laser is solved. The laser comprises a pumping module, a grain medium and an optical resonant cavity, wherein the optical resonant cavity comprise an output mirror, a polarization film, a multi-surface prism, a total-reflection mirror and a 90-degree linear polarization rotator, wherein a light beam is totally reflected for three times by the multi-surface prism to achieve 90-degree image rotating of the light beam, the light bream oscillates for many times in the optical resonant cavity and is subjected to 90-degree image rotating by the multi-surface mirror, the problem of non-uniform energy distribution of an original light beam is changed, and symmetric light spot output is obtained; and meanwhile, residual pumping loss is not generated, the negative effect is low, and the laser is wide in application range.

Description

technical field [0001] The invention relates to the technical field of lasers, in particular to a laser for improving asymmetric light spot output. Background technique [0002] The symmetry of laser output has been an important assessment index for laser applications since the invention of lasers. The inhomogeneity of the pump light generated by the pump module or the pump source has a great influence on the symmetry of the laser output. At present, the main ways to improve the symmetry of the laser output spot are to limit the laser mode and improve the symmetry of the pump light field. [0003] The method of limiting the laser mode has low pump light utilization rate and low conversion efficiency, which will waste most of the pump light energy. In order to obtain higher energy output, it is necessary to use stronger pump light for pumping, which leads to the laser A series of problems such as heat dissipation and birefringence. Improving the symmetry of the pump light ...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems existing in the prior art, the present invention provides a laser that improves the output of the asymmetric spot. The laser improves the uneven pumping caused by the pumping module itself without wasting the energy of the pumping light. The problem of output spot asymmetry

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