Xenon lamp pumped solid laser based on refractive index highly-matched gain medium

Abstract

A xenon lamp pumping solid laser based on a refractive index highly-matched gain medium comprises a xenon lamp pumping system and a resonant cavity, the resonant cavity comprises an input mirror, an output mirror and an end face pumping gain medium, the gain medium is a gradient-doped transparent ceramic rod prepared by adopting a gel casting method, a core is made of YAG ceramic co-doped with Cr and Nd ions, the outer layer is made of YAG ceramics singly doped with any rare earth ions of Lu, Gd and Te, and the YAG ceramics are staggered one by one in an N + 1 mode; pump light output by the xenon lamp pump laser is converged by the laser converging device and then enters the input mirror, the transmitted pump light enters the gain medium from the end face, the gain medium generates laser through stimulated radiation, and the generated laser oscillates in the resonant cavity and is finally output from the output mirror. The gradient doped transparent ceramic is adopted, through doping and matching of rare earth ions with different concentrations, the theoretical transmittance is achieved, meanwhile, the heat effect problem caused by different refractive indexes is solved, the light beam quality is effectively improved, and mode regulation and control are achieved.

Description

technical field [0001] The invention relates to the field of solid-state lasers, in particular to a xenon lamp-pumped solid-state laser based on a gain medium with highly matched refractive index. Background technique [0002] Sunlight is a continuous wide-spectrum light source, and its radiation spectrum contains many commonly used laser pump absorption bands. The focused high-energy-density sunlight is coupled into the laser medium, and the laser medium is pumped to achieve laser output. Lasers are called solar-pumped lasers, and they have potential applications in satellite laser communications, wireless transmission of space energy, and space laser weapons. At present, there are three main types of lasers that directly use sunlight as a pumping source: solar-pumped gas lasers, solar-pumped solid-state lasers, and solar-pumped fiber lasers. The gain medium used in solar-pumped solid-state lasers is solid materials such as crystals and ceramics. The convergence system has...

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Problems solved by technology

In actual situations, there is a large deviation between the core and the cladding refractive index, the longer the length, the

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