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

Active Publication Date: 2019-11-15
NANCHANG HANGKONG UNIVERSITY
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Problems solved by technology

It can be predicted that with the decrease of the radius of curvature of the concave cavity mirror, due to the further increase of the refr

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

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Embodiment Construction

[0039] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the protection scope of the present invention will be defined more clearly.

[0040] See figure 1 , figure 2 , A dual optical path alignment device for a plano-concave laser cavity based on a Gaussian beam, comprising: a Gaussian light source 1; a cube dichroic prism 2 is located in front of the Gaussian light source 1 and divides the light into two paths; light blocking device 3, reflection The mirror one 4 and the positive power lens group 5 are located in one optical path in sequence, and the reflecting mirror 4 turns the optical path by 90°; the light blocking device 6 and the reflecting mirror two 7 are located in the other optical path in sequence. The second mirror 7 turns the light path by 90°; the second cube di...

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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.

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...

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Application Information

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IPC IPC(8): H01S3/08H01S3/10G02B27/12G02B27/30
CPCG02B27/126G02B27/30H01S3/08H01S3/10
Inventor 肖孟超
Owner NANCHANG HANGKONG UNIVERSITY
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