Study on the generation of high-power terahertz wave from surface-emitted THz-wave parametric oscillator with MgO:LiNbO3 crystal

Zhongyang Li; Jianquan Yao; Degang Xu; Kai Zhong; Pibin Bing; Jingli Wang

doi:10.1117/12.868880

4 November 2010 Study on the generation of high-power terahertz wave from surface-emitted THz-wave parametric oscillator with MgO:LiNbO₃ crystal

Zhongyang Li, Jianquan Yao, Degang Xu, Kai Zhong, Pibin Bing, Jingli Wang

Author Affiliations +

Proceedings Volume 7854, Infrared, Millimeter Wave, and Terahertz Technologies; 78543H (2010) https://doi.org/10.1117/12.868880
Event: Photonics Asia 2010, 2010, Beijing, China

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.

Citation Download Citation

Zhongyang Li, Jianquan Yao, Degang Xu, Kai Zhong, Pibin Bing, and Jingli Wang "Study on the generation of high-power terahertz wave from surface-emitted THz-wave parametric oscillator with MgO:LiNbO₃ crystal", Proc. SPIE 7854, Infrared, Millimeter Wave, and Terahertz Technologies, 78543H (4 November 2010); https://doi.org/10.1117/12.868880

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