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Proceedings Paper

Influence of the temperature distribution in KDP crystal on the second-harmonic generation
Author(s): Wei Li; Guoying Feng; Qiuhui Zhang; Tianxiang Zhang; Hai Liao
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Paper Abstract

Using split-step algorithm based on the fast Fourier transform and a fourth-order Runge-Kutta(R-K) method, we studied the second-harmonic generation(SHG) of high power laser with KDP crystal. The transverse walk-off effect, diffraction, the second-order and the third-order nonlinear effects of KDP crystal have been taken into consideration. Special attention has been paid to the influences of a kind of self-induced thermal effect. The phase mismatching quantity, the intensity distribution of output beam and the frequency conversion efficiency varying with the crystal temperature distribution have been analyzed. The calculated results indicate that self-induced thermal effects results in the temperature distribution in KDP crystal and the phase mismatching, then the phase mismatching leads to the decreasion of the conversion efficiency.

Paper Details

Date Published: 25 August 2008
PDF: 8 pages
Proc. SPIE 7056, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications II, 70561G (25 August 2008); doi: 10.1117/12.795217
Show Author Affiliations
Wei Li, Sichuan Univ. (China)
Guoying Feng, Sichuan Univ. (China)
Qiuhui Zhang, Sichuan Univ. (China)
Tianxiang Zhang, Sichuan Univ. (China)
Hai Liao, Sichuan Univ. (China)


Published in SPIE Proceedings Vol. 7056:
Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications II
Shizhuo Yin; Ruyan Guo, Editor(s)

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