Composite self-Raman frequency-doubled yellow laser crystal module

Abstract

The invention relates to a composite self-Raman frequency-doubled yellow laser crystal module. The module comprises self-Raman laser crystals, wherein nonlinear optical crystals which are cut at a special matching angle are adhered into a whole by an optical adhesive; and optical thin films coated on the front end face and the rear end face of the crystals together form an optical resonant cavity. The yellow laser module has the characteristics of simple design, compact structure, convenience of batch production and low cost; and in use, the laser module does not need to be adjusted, and yellow light can be directly emitted under pumping irradiation of a semiconductor laser which passes through a shaping and coupling system. The yellow laser module can be used in a laser device which outputs low and medium power, so that laser can be conveniently and rapidly output, and the module is suitable for sodium beacon light sources of the field of military affairs and meteorological field and the field of laser cosmetology and can be widely applied to the fields such as spectroscopy, laser radar, information storage and the like.

Description

technical field [0001] The invention relates to a solid-state laser module, which belongs to the application of crystal materials in the field of optoelectronics, and can be applied to LD end-face pumping to generate yellow laser light. Background technique [0002] Yellow light laser can treat skin hemangioma, port wine stain, telangiectasia, etc. in the field of laser medical cosmetology. It can be used as a sodium beacon light source in the military and meteorological fields. In addition, it is also widely used in spectroscopy, information storage, and laser radar. Applications. At present, there are mainly three methods for solid-state laser technology to produce yellow light: one is to obtain yellow light from infrared laser produced by frequency-doubling neodymium-doped laser crystal (LD-pumpedNd:YAG / LBO 556nm yellow laser, Optics & Laser Technology, 38, 569 -572 (2006)); the second is to obtain yellow light from the double-wavelength laser sum frequency of the 1 micr...

AI Technical Summary

Problems solved by technology

However, based on the first two methods of obtaining yellow light, the output efficiency is generally low due to the limitation of the transition section of the corresponding fundamental frequency laser; the third method uses the transition of the largest transition section of the neodymium-doped laser crystal to generate the Raman frequency of the laser It is an effective means to obtain higher power yellow laser

The yellow light reports produced by the above methods all use discrete optical components, the whole system is relatively complex, and is greatly affected by the environment

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