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Optical Engineering

High-powered tunable terahertz source based on a surface-emitted terahertz-wave parametric oscillator
Author(s): Zhongyang Li; Pibin Bing; Jianquan Yao; Degang Xu; Kai Zhong
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Paper Abstract

A high-powered pulsed terahertz (THz)-wave has been parametrically generated via a surface-emitted THz-wave parametric oscillator (TPO). The effective parametric gain length under the noncollinear phase matching condition was calculated for optimization of the parameters of the TPO. A large volume crystal of MgO:LiNbO3 was used as the gain medium. THz-wave radiation covering a frequency range from 0.87 to 2.73 THz was obtained. The average power of the THz-wave was 9.12 μW at 1.75 THz when the pump energy was 94 mJ, corresponding to an energy conversion efficiency of about 9.7×10−6 and a photon conversion efficiency of about 0.156%. The THz-wave power in our experiments is high enough for practical applications to spectrum analysis and imaging.

Paper Details

Date Published: 15 May 2012
PDF: 5 pages
Opt. Eng. 51(9) 091605 doi: 10.1117/1.OE.51.9.091605
Published in: Optical Engineering Volume 51, Issue 9
Show Author Affiliations
Zhongyang Li, North China Univ. of Water Conservancy and Electric Power (China)
Pibin Bing, North China Univ. of Water Conservancy and Electric Power (China)
Jianquan Yao, Tianjin Univ. (China)
Degang Xu, Tianjin Univ. (China)
Kai Zhong, Tianjin Univ. (China)

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