Plano-concave laser cavity double-optical-path alignment device and method based on Gaussian beam

A technology of Gaussian beams and alignment devices, which is applied to the structure/shape of lasers, laser components, and optical resonators, can solve problems such as deterioration of quasi-accuracy and increased difficulty of balance, and achieve improved alignment accuracy and high Effect of Alignment Accuracy
CN110459946AActive Publication Date: 2019-11-15NANCHANG HANGKONG UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NANCHANG HANGKONG UNIVERSITY
Publication Date
2019-11-15

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Abstract

The invention discloses a plano-concave laser cavity double-optical-path alignment device and method based on a Gaussian beam, belonging to the field of solid-state laser device laser cavity adjustment. Two optical paths are set to align concave and plane cavity lenses with different refractive characteristics, and a positive focal power lens group with a focal point that coincides with a spherical center of the concave cavity lens is set in a concave cavity lens alignment optical path. For the Gaussian beam, a composite system formed by the lens group and the concave cavity lens is equivalentto a flat plate, so the refractive characteristics of the concave cavity lens are modified, an alignment spot with a similar size with the plane cavity lens is obtained, and the alignment accuracy ofa resonant cavity is improved. For resonant cavities with different concave cavity lens radii, the alignment can be achieved only with the satisfaction of the coincidence of a positive focal power lens group focal point and the spherical center of the concave cavity lens, and the alignment accuracy is stable without degradation.
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Description

Technical field

[0001] The present invention relates to the technical field of laser cavity adjustment of solid lasers, in particular to a dual optical path alignment device and method for a plano-concave laser cavity based on Gaussian beams. Background technique

[0002] Solid-state lasers are widely used in civil, military, processing, medical and scientific research fields. It is commonly used in stage lighting, ranging, coherent measurement, punching, cutting and welding, atmospheric detection, spectroscopy research, surgery and ophthalmic surgery. The solid-state laser technology is developing extremely rapidly in our country, especially in the low- and medium-power solid-state laser technology, the industrialization road has been very mature. However, most of the production process of solid-state lasers on the production line still follows the traditional single-line mode, with strict sequential processes. Usually the resonant cavity is adjusted manually after starting th...

Claims

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