One-way cycle intracavity frequency doubling laser

Abstract

The present invention provides a one-way cycle intracavity frequency doubling laser. The laser comprises a first crystal, a first reflector, an acousto-optic regulation Q light opening, a second crystal, a second reflector, an SHG characteristic crystal, a THG characteristic crystal, a third reflector, a polarizing film, a fifth crystal and a fourth reflector; the first polarized light passes through the first crystal, the acousto-optic regulation Q light opening and the second crystal to output the second polarized light, the second polarized light is reflected by the second reflector to enter the SHG characteristic crystal to generate the first frequency doubled light and output the sum frequency of first frequency doubled light and the fundamental frequency light entering the THG characteristic crystal to generate and splittingly output ultraviolet light, the third reflector reflects the fundamental frequency light which is splittingly emitted by the THG characteristic crystal, the polarizing film transmits the fundamental frequency light in one-way direction, the fifth crystal converts the fundamental frequency light to output the third polarized light, and the third polarized light is reflected by the fourth reflector to enter the first crystal to form a one-way enhanced frequency doubling ring cavity so as to improve the power of light transmission in the cavity, increase the laser output power, eliminate the space hole-burning effect and the longitudinal mode and mode jump effect of a traditional axial laser and reduce the excess loss.

Description

technical field [0001] The invention belongs to the field of lasers, in particular to a unidirectional cycle intracavity frequency doubling laser. Background technique [0002] Ultraviolet lasers are widely used in the field of industrial micro-processing, such as marking, drilling, scribing, welding, and cutting of industrial parts, as well as micro-processing of medical devices, packaging of electronic components, and three-dimensional molding of micro components . In addition, it has broad application prospects in microelectronics, spectral analysis, optical data storage, optical disc control, atmospheric detection, photochemistry, photobiology, space optical communication, laser-induced material atomic fluorescence and ultraviolet absorption, and medical treatment. [0003] The core of realizing the laser is mainly the laser working substance in the laser that can realize the inversion of the number of particles, that is, the working substance containing the metastable ...

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at providing a unidirectional cycle intracavity frequency-doubling laser for the problem of unstable operation of the laser due to the hole-burning effect and the mode-hopping effect of the existing laser, and aims to provide a stable, low-loss, and recyclable Unidirectional cyclic intracavity frequency doubled laser

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