A kind of laser light source and the design method of laser light source

Abstract

The invention discloses a laser light source and a design method thereof. The laser light source comprises a plurality of lasers, a conversion lens, a raster and an outer lens, wherein the lasers output laser beams of different wavelength ranges, and each wavelength range comprises an appointed wavelength. The conversion lens collimates the laser beams and gathers the collimated laser beams on the raster, the raster diffracts the laser beams, and the corresponding laser in designed wavelength of each laser beam emits in the same diffraction angle onto the outer lens. The outer lens is capable of reflecting partially and transmitting partially and is used for reflecting the laser beams of designed wavelength so as to enable each laser beam of the designed wavelength to return into the corresponding lasers along the original light path and for outputting laser beams of design wavelength. The outer laser cavity formed by the laser light source has certain wavelength selectivity and fixes the designed wavelength, spectral width is narrowed, stability of the laser light source is improved, and application needs are met.

Description

technical field [0001] The invention relates to the field of laser technology, in particular to a laser light source and a design method of the laser light source. Background technique [0002] In the prior art, laser light sources capable of outputting multiple laser beams with specified wavelengths are very rare, and the only three-color laser light source also has many problems. Most of the current three-color laser light sources are realized by pumping a solid-state laser through a semiconductor laser to generate initial Laser, and then through the frequency doubling crystal to double the frequency of the initial laser to obtain three primary colors. This solution requires the use of semiconductor lasers, solid-state lasers and frequency doubling crystals. The structure is relatively complex and the configuration is not reasonable enough. Moreover, because the semiconductor laser used as the pump source is often affected by environmental factors such as temperature, the ...

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Problems solved by technology

This solution requires the use of semiconductor lasers, solid-state lasers and frequency doubling crystals. The structure is relatively complex and the configuration is not reasonable enough. Moreover, because the semiconductor laser used as the pump source is often affected by environmental factors such as temperature, the output wavelength of the semiconductor laser is unstable. The process of pumping solid-state lasers is also very unstable, that is, the reliability of the three-color laser light source in the prior art is not high, and it does not meet the application requirements

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