Solid state laser device of high power semiconductor pump
A solid-state laser and high-power technology, applied in the field of lasers, can solve problems such as complex laser structures, unsuitable for mass production, and cumbersome preparation processes, and achieve the effect of simple structure, easy preparation, and high-quality beams
Inactive Publication Date: 2008-12-10
SHANGHAI BRANCH FUZHOU GAOYI COMM CO LTD
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Problems solved by technology
The structure of the laser is complicated, the preparation process is cumbersome, and it is not suitable for mass production
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[0020] Such as Figure 1a , 1b As shown, the high-power semiconductor-pumped solid-state laser of the present invention includes a pump source, a laser gain medium and a resonant cavity; the pump source is a laser diode 111 or a laser diode array 115; the laser gain medium is composed of a laser gain medium sheet 105B and an optical The composite laser gain dielectric sheet 114 is assembled by the attached sheets; the resonant cavity is a flat-concave cavity, the front cavity sheet S1 is provided on one surface of the composite laser gain dielectric sheet 114 by coating, and the rear cavity sheet S2 is provided by coating On the concave surface of the output cavity mirror 113; an optical element 112 is arranged between the composite laser gain medium sheet 114 and the output cavity mirror 113. This optical element can be a frequency doubled crystal or a passive Q-switched crystal to form a high power frequency doubled laser or high Power Q-switched laser.
[0021] As shown in FIGS...
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A solid laser of high power semiconductor pumping comprises a pumping source, a laser gain medium and a resonant cavity; the solid laser is characterized in that: the laser gain medium is a composite laser gain medium sheet composed by stacking a laser gain medium sheet and an optical accessory piece; the optical accessory piece is made by host material corresponding to the laser gain medium or other material with larger coefficient of thermal conductivity, the refractive index and the coefficient of expansion approximate to the laser gain medium; the stacking mode of the composite medium sheet is optical cement, deepening optical cement or adhesive layer. The invention stacks the laser gain medium sheet with the optical accessory piece by optical cement, deepening optical cement or adhesive layer to be a composite laser gain medium sheet which has simple structure and easy preparation. The laser having the composite laser gain medium sheet is able to realize the heat flow nearly one-dimensional distribution to achieve a laser output of beam with high power and high quality.
Description
Technical field [0001] The invention relates to a laser, especially a high-power solid-state laser pumped by a semiconductor. Background technique [0002] The biggest obstacle to the development of solid-state lasers to high power is the thermal effect of the laser gain medium. In semiconductor-pumped solid-state lasers, in order to reduce the thermal lens effect and obtain high-power output, slab lasers and sheet lasers have been proposed. [0003] The use of laser gain medium flakes can realize the nearly one-dimensional distribution of heat flow, so it is one of the effective means to solve the thermal effect of solid-state lasers, but many factors will affect the one-dimensional heat distribution of the flakes. The calculation and analysis of the main influencing factors of the sheet heat distribution show that under uniform pumping conditions, the uniformity of the radial temperature in the pumping zone is not only related to the ratio of the area of the pumping zone to t...
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IPC IPC(8): H01S3/06H01S3/042H01S3/109H01S3/0941H01S3/08H01S3/10
Inventor 吴砺凌吉武卢秀爱彭永进陈卫民
Owner SHANGHAI BRANCH FUZHOU GAOYI COMM CO LTD