Yellow-light self-Raman laser

Abstract

The invention relates to a yellow-light self-Raman laser. The yellow-light self-Raman laser comprises a laser diode, a coupling optical fiber, a condensing lens, an input cavity lens, a self-Raman laser crystal, a Q adjusting device and an output cavity lens which are all sequentially arranged in the exit direction of an optical path, wherein the self-Raman laser crystal is a neodymium-doped calcium oxide borate salt crystal, the neodymium-doped calcium oxide borate salt crystal comprises neodymium-doped YCOB Nd:YCOB or neodymium-doped GdCOB Nd:GdCOB, and the neodymium ion doping concentration of the neodymium-doped YCOB Nd:YCOB or the neodymium-doped GdCOB Nd:GdCOB of the self-Raman laser crystal ranges from 0.1 at% to 30 at%. According to the yellow-light self-Raman laser, the neodymium-doped calcium oxide borate salt crystal serves as the self-Raman laser crystal, and therefore both laser gain mediums and Raman gain mediums can be obtained, the self-Raman effect can also be achieved, a frequency doubling crystal is reduced compared with a traditional self-Raman laser crystal, and the yellow-light self-Raman laser is smaller in size, more compact in structure, lower in cost, more stable in operation and suitable for large-scale batch industrial production and has good market application prospect.

Description

technical field [0001] The invention relates to a yellow self-Raman laser and belongs to the technical field of lasers. Background technique [0002] The 550-600nm yellow light band laser has irreplaceable application value in medical treatment, demonstration, satellite guidance, underwater detection and other fields. Yellow light lasers with compact structure, stable operation and low cost have gradually become the focus of many researchers. Various types of yellow lasers such as copper vapor lasers, dye yellow lasers, optically pumped semiconductor lasers, dual-wavelength and frequency neodymium lasers, and Raman lasers have emerged as the times require. The copper vapor laser has a complex structure. In order to vaporize copper, the laser must have an electric heating device to heat the copper to a temperature of 1500°C. Generally, the aluminum oxide material with high temperature resistance and good vacuum airtightness is used as the shell, and a heating wire is wound o...

AI Technical Summary

Problems solved by technology

Dye yellow laser is an important direction in the early research of yellow laser, but its development is restricted by its low output power, poor safety, toxic dye and unstable performance, and complex cooling system.

[0003] Optically pumped semiconductor lasers can theoretically generate laser light of any wavelength within the 477-600nm band, but for each target wavelength, the semiconductor must be specially designed, which is costly

Dual-wavelength and frequency neodymium lasers mainly use nonlinear crystals in the resonator to generate 1060nm and 1300nm wavelength lasers and frequency lasers near 590nm in the neodymium-doped working material. This method has a single output wavelength and low conversion efficiency. Application limited range

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