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Lath laser for implementing Z shape light path by reflecting glass

A technology of slab laser and reflective glass, used in lasers, laser parts, phonon exciters, etc., can solve the problems of reduced total reflection efficiency and poor beam quality, and achieve reduced total reflection efficiency, simple processing, Efficient effect

Inactive Publication Date: 2007-01-31
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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Problems solved by technology

[0004] In order to overcome the deficiencies of the above-mentioned prior art, the present invention provides a slab laser with reflective glass to realize a Z-shaped optical path, so as to solve the reduction of total reflection efficiency caused by thermal deformation of the crystal, and at the same time solve the problem of beam quality deterioration caused by the end face effect , the use of laser diode pumping can obtain high power and high efficiency, while improving beam quality

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  • Lath laser for implementing Z shape light path by reflecting glass
  • Lath laser for implementing Z shape light path by reflecting glass

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Embodiment Construction

[0022] see figure 1 and figure 2 ,Depend on figure 1 , figure 2 It can be seen that the reflective glass of the present invention realizes the slab laser of the Z-shaped optical path, including a laser medium, a pump source, and a pump light coupling system located between the rear cavity mirror 2 and the front cavity mirror 3, and its characteristics are:

[0023] The laser medium is a rectangular parallelepiped thin-slice laser crystal slab 1, and a pair of reflective glasses 7, 8 of the laser wavelength are respectively provided in parallel outside the left and right two large surfaces of the thin-slice laser crystal slab 1 through a sealing element 14. An absorber 12, 13 is provided on the upper and lower sides of the thin laser crystal slab 1, and the cooling water channel is between the thin laser crystal slat 1 and the reflective glass 7, 8;

[0024] The pumping source is composed of double column laser diode arrays 6, 7, cylindrical coupling lenses 4, 5 are betwee...

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Abstract

The invention is a strip laser of implementing Z-shaped light path by reflecting glass, characterized in that: laser medium is cuboid. Two end surfaces of the laser medium are bonded with undoped crystals, and pumped light enters through the reflecting glass and cooling water layer into the laser crystal and is absorbed by the laser medium. The top and bottom large surfaces of the laser medium are cooled with water. The laser resonance cavity is a flat cavity. And it reduces the effect of traditional Z-shaped strip on laser total reflection caused by thermal deformation of crystals and reduces the requirements for surface smoothness of crystals, and it eliminates stress induced laser birefraction and reduces end surface effect by the undoped crystals easy to radiate heat. Further, it reduces waste heat deposition in crystals by laser diode array side pumping, able to implement high power and high beam quality laser output.

Description

technical field [0001] The invention belongs to all-solid-state solid-state lasers, in particular to a slab laser with a Z-shaped optical path realized by reflective glass, which uses reflective glass to realize multiple passages of laser light along the temperature gradient direction in the crystal, eliminating stress-induced birefringence, and at the same time The end face is bonded to the crystal without doped laser ions to eliminate the end face effect, which can realize high power and high beam quality laser output. Background technique [0002] Industrial material processing, spectroscopy, laser remote sensing, and military fields all require lasers to have good beam quality. Thermal focusing, stress-induced biaxial focusing, and birefringence generated by rod-shaped laser working media have a serious impact on beam quality. The thermal gradient and thermally induced birefringence of the laser medium only occur in the thickness direction, so there is no stress-induced ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/06H01S3/042H01S3/0941H01S3/08
Inventor 李劲东郭明秀付文强施翔春胡企铨
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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