Laser for outputting radial polarized light beam

Abstract

A laser for outputting radial polarized light beam comprises a pumping source, is characterized in: a pumping light shaping and coupling apparatus, a front cavity mirror, a laser medium, a Brewster shaft vertebra mirror and a rear cavity mirror are disposed successively along the direction of the pumping light from the pumping source; the centered wavelength of the pumping light from the pumping source is the same with the absorption wavelength of the laser medium; the pumping light passes through the pumping light shaping and coupling apparatus and is focused onto the laser medium; and the Brewster shaft vertebra mirror is made of high refractive index material, has a drift angle twice of the complementary angle of the Brewster angle. The invention achieves the advantages of simple structure, low cost, good quality of outputted radial polarized light beam.

Description

technical field [0001] The invention relates to a laser, in particular to a laser outputting a radially polarized light beam. Background technique [0002] The direct generation of radially polarized beams through the output of lasers has always been a hot topic in international research. In the 1960s and 1970s, researchers began to develop radially polarized lasers. In 1972, the first radially polarized He-Ne laser developed by Y.Mushiake and other Japanese scientists was born. Almost at the same time, Swiss scientist Pohl realized radially polarized output in a ruby ​​laser pumped by a flash lamp. In 1974, American scientist J.J.Wynne developed In 1981, American scientists Marhic and Garmire developed a radially polarized CO2 laser. After entering the second half of the 1990s, the research on LD side-pumped rod-shaped Nd:YAG radially polarized lasers and industrial high-power CO2 radially polarized lasers reached a climax. [0003] It is well known that radially polariz...

AI Technical Summary

Problems solved by technology

Although crystal gratings can be used to realize radially polarized laser light with high polarization purity in the cavity, the processing cost of crystal gratings is very high, which has hindered its popularization and application in the industrial field.

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