577nm yellow laser unit and generation method of 577nm yellow laser

Abstract

The invention discloses a 577nm yellow laser unit and a generation method of 577nm yellow laser. A 1064nm laser unit and a 1256nm laser unit are used as fundamental frequency light sources through extra-cavity sum-frequency of 1064nm laser and 1256nm laser; trough optical components, such as a 45-degree beam splitter and a coupling system, the 1064nm and 1256nm laser beams are subjected to sum-frequency in sum-frequency crystal, and 577nm yellow laser can be output. A yellow laser system has the advantages such as novelty of the generation mode, compact structure, operational safety and high stability, and has important applicable value in the fields such as medicine, astronomy and scientific research.

Description

technical field [0001] The invention relates to a laser, in particular to a laser and a laser generating method for obtaining 577nm yellow laser output by using a sum-frequency nonlinear process. It is suitable for a wide range of applications in laser ophthalmology, astronomy, food safety and many other fields. Background technique [0002] Since the birth of lasers, the application fields have become more and more extensive. Lasers with different wavelengths have different uses. Among them, 577nm lasers play an important role in the treatment of fundus diseases in the medical field. However, the current generation of 577nm lasers is mainly Rely on dye lasers and semiconductor devices, but dye lasers have a series of problems such as poor safety, dye degradation, high energy consumption, unstable performance, and toxicity (such as the literature Design of a transversely pumped, high repetition rate, narrow bandwidth dye laser with high wavelength stability, REVIEW OF SCIEN...

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Problems solved by technology

[0003] The present invention aims to solve a series of problems such as low power, poor safety, low efficiency, and pollution that exist in current 577nm dye lasers. 577nm yellow light laser with laser output and 577nm yellow light laser generation method

[0004] In order to solve the problems of existing 577nm laser environmental pollution, high price, and few production methods, the present invention provides a solution: a 577nm yellow laser, which is characterized in that it includes a sum frequency crystal, and the horizontal optical path where the sum frequency crystal is located is sequentially Be provided with 1064nm laser source, the first coupling system, the first 45 ° beam splitter, sum frequency crystal, the second 45 ° beam splitter; the first 45 ° beam splitter on the vertical optical path perpendicular to the horizontal optical path The other side is provided with a 1256nm laser source and a second coupling system; wherein:

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