A solid-state blue laser

Abstract

The invention discloses a solid blue laser, comprising a fundamental frequency module, which comprises a 1-micron waveband solid laser; a frequency doubling module; a stimulated Raman module; and a sum frequency module. The 1-micron band solid-state laser generates a linearly polarized pulse fundamental frequency laser, and through frequency doubling conversion, the frequency doubling laser is generated; the frequency doubling laser and the remaining fundamental frequency laser pass through the Raman medium, and the Raman conversion process of the frequency doubling laser is mainly carried out in the Raman medium. , the obtained Raman laser and the remaining fundamental frequency laser propagate in collinear; the fundamental frequency laser and the Raman laser undergo sum-frequency conversion through the sum-frequency crystal to generate the sum-frequency blue laser, which is separated from other lasers by the beam splitter. The invention uses the solid laser in the 1-micron waveband with good amplification as the fundamental frequency light, adopts frequency conversion processes such as frequency doubling, stimulated Raman, sum frequency and the like with high conversion efficiency to obtain blue laser, and solves the problem of the existing method for generating blue laser from solid laser. Inefficient problem, and has good scalability.

Description

technical field [0001] The present invention relates to a blue light laser, in particular to a solid blue light laser. Background technique [0002] Blue-ray lasers are widely used in civil fields such as marine exploration, high-density optical storage, digital video technology, color laser display technology, laser refrigeration, and laser medicine. All-solid-state lasers have the advantages of small size, high efficiency, long life, compact structure, and good reliability. Combining them with nonlinear frequency conversion technology can obtain blue light output with high efficiency, high output power, and high beam quality. A method commonly used by people to obtain Blu-ray output. [0003] The main methods of obtaining solid-state blue light laser mainly include: laser medium doped with rare earth ions to generate blue light by frequency doubling of 0.9 micron band laser, triple frequency of 1.3 micron band laser to produce blue light, and summing frequency of 0.9 micr...

AI Technical Summary

Problems solved by technology

Laser dual oscillation is not easy to achieve, and it is difficult to obtain high-power laser output

[0007] The scheme of using the nonlinear optical effect of solid-state laser is a suitable scheme for blue lasers at the present stage, but the existing schemes of frequency doubling, frequency tripling, and sum frequency all use laser medium doped with rare earth ions with a small stimulated emission cross section. 0.9 micron or 1.3 micron laser with limited magnification

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