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Proceedings Paper

Laser damage threshold and nonlinear optical properties of large aperture elements of YCOB crystal
Author(s): Yanqing Zheng; Anhua Wu; Pan Gao; Xiaoniu Tu; Xiaoyan Liang; Jing Hou; Liming Yang; Tao Wang; Liejia Qian; Erwei Shi
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Paper Abstract

Large size of YCa4O(BO3)3(YCOB) crystals were grown both by Czochralski and Bridgman methods. Large size elements as large as 60 mm clear aperture were cut and polished with surface flatness of 1/5 wavelength. Optical homogeneity of YCOB crystal was found in the order of 10-6. Laser damage thresholds of several YCOB crystal elements were tested using different laser facilities with different pulse widths or wavelengths, with thresholds varied from 0.8 GW/cm2 to more than 1 TW/cm2. One SHG and two optical parametric chirped-pulse amplification (OPCPA) experiments were executed to characterize the nonlinear optical properties of YCOB crystals and the quality of the crystals. The results shown that YCOB had good performance in OPCPA application, especially with low content of parameter florescence. Combined with good NLO performance and possibility to grow large size crystals, YCOB crystal was a good choice for high power OPCPA applications.

Paper Details

Date Published: 12 January 2012
PDF: 7 pages
Proc. SPIE 8206, Pacific Rim Laser Damage 2011: Optical Materials for High Power Lasers, 82062G (12 January 2012); doi: 10.1117/12.910508
Show Author Affiliations
Yanqing Zheng, Shanghai Institute of Ceramics (China)
Anhua Wu, Shanghai Institute of Ceramics (China)
Pan Gao, Shanghai Institute of Ceramics (China)
Xiaoniu Tu, Shanghai Institute of Ceramics (China)
Xiaoyan Liang, Shanghai Institute of Optics and Fine Mechanics (China)
Jing Hou, Chengdu Fine Optical Engineering Research Ctr. (China)
Liming Yang, Chengdu Fine Optical Engineering Research Ctr. (China)
Tao Wang, Shanghai Institute of Optics and Fine Mechanics (China)
Liejia Qian, Shanghai Jiao Tong Univ. (China)
Erwei Shi, Shanghai Institute of Ceramics (China)

Published in SPIE Proceedings Vol. 8206:
Pacific Rim Laser Damage 2011: Optical Materials for High Power Lasers
Jianda Shao, Editor(s)

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