Laser for outputting radial polarized light beam

A laser and polarization technology, applied in the field of lasers, can solve the problems of hindering popularization and application, high cost of crystal grating processing, etc., and achieve the effect of simple processing, low cost and good beam quality

Inactive Publication Date: 2009-10-07
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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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.

Method used

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  • Laser for outputting radial polarized light beam
  • Laser for outputting radial polarized light beam
  • Laser for outputting radial polarized light beam

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Embodiment Construction

[0023] see first figure 1 , figure 1 It is a structural schematic diagram of a laser outputting radially polarized laser light according to the present invention. It can be seen from the figure that the laser outputting the radially polarized light beam of the present invention includes a pumping source 1, along which the direction of the pumping light output by the pumping source 1 is the pumping light shaping and coupling device 2, the front cavity mirror 3, and the laser medium in sequence. 5. Brewster axis cone mirror 6 and rear cavity mirror 4, the central wavelength of the pump light output by the pump source 1 is the same as the absorption wavelength of the laser medium 5; the pump light passes through the pump light The shaping and coupling device 2 is focused on the laser medium 5, and the Brewster axicon 6 is made of a high-refractive-index material, and the vertex angle is twice the complementary angle of the Brewster angle. Axis cone.

[0024] The Brewster axico...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/094H01S3/0941H01S3/10G02B27/28H01S3/08
Inventor 李建郎林迪
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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