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Proceedings Paper

Study on the generation of high-power terahertz wave from surface-emitted THz-wave parametric oscillator with MgO:LiNbO3 crystal
Author(s): Zhongyang Li; Jianquan Yao; Degang Xu; Kai Zhong; Pibin Bing; Jingli Wang
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Paper Abstract

High-power nanosecond pulsed THz-wave radiation was achieved via a surface-emitted THz-wave parametric oscillator (TPO). The effective parametric gain length under the condition of noncollinear phase matching was calculated to optimize the parameters of the TPO. Only one MgO:LiNbO3 crystal with large volume was used as gain medium. THz-wave radiation from 0.8 to 2.9 THz was obtained. The maximum THz-wave output was 289.9 nJ/pulse at 1.94 THz when pump power density was 211 MW/cm2, corresponding to the energy conversion efficiency of 3.43×10-6 and the photon conversion efficiency of about 0.05%. The far-field divergence angle of THz-wave radiation was 0.0204 rad at vertical direction and 0.0068 rad at horizontal direction.

Paper Details

Date Published: 4 November 2010
PDF: 9 pages
Proc. SPIE 7854, Infrared, Millimeter Wave, and Terahertz Technologies, 78543H (4 November 2010); doi: 10.1117/12.868880
Show Author Affiliations
Zhongyang Li, Tianjin Univ. (China)
Jianquan Yao, Tianjin Univ. (China)
Degang Xu, Tianjin Univ. (China)
Kai Zhong, Tianjin Univ. (China)
Pibin Bing, Tianjin Univ. (China)
Jingli Wang, Tianjin Univ. (China)

Published in SPIE Proceedings Vol. 7854:
Infrared, Millimeter Wave, and Terahertz Technologies
Cunlin Zhang; Xi-Cheng Zhang; Peter H. Siegel; Li He; Sheng-Cai Shi, Editor(s)

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