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Influence of Laser Distribution on the Thermal Effect of YVO4-Nd:YVO4 Composite Crystals

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4 Author(s)
Yang-Bin Xu ; Coll. of Sci., Xi''an Univ. of Archit. & Technol., Xi''an, China ; Jin-Bo Hao ; Peng Shi ; Ya-Wen Ling

Based on semi-analytical theory, end-pumped thermal lens and distortion field of a rectangle YVO4-Nd:YVO4 composite crystal by the diode laser with super-Gaussian mode was researched. The result shows that when the output power of diode laser is 10 W, the pump-face centre of 0.5 at.-% neodymium-doped YVO4-Nd:YVO4 composite crystal can get 147 mm maximal thermal focal length (when k = 5) and has 2.34 mum thermal distortion (when k = 1). It can be concluded that end-pumped thermal lens and distortion field of YVO4-Nd:YVO4 composite crystal have obvious varies with ranks of super-Gaussian. The method can also be applied to the research on other thermal problems of composite crystal, which can offer theoretical basis for efficiently resolving the thermal problems in laser system.

Published in:

Photonics and Optoelectronics, 2009. SOPO 2009. Symposium on

Date of Conference:

14-16 Aug. 2009