4 November 2010 Study on the generation of high-power terahertz wave from surface-emitted THz-wave parametric oscillator with MgO:LiNbO3 crystal
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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.
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Zhongyang Li, Zhongyang Li, Jianquan Yao, Jianquan Yao, Degang Xu, Degang Xu, Kai Zhong, Kai Zhong, Pibin Bing, Pibin Bing, Jingli Wang, 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); doi: 10.1117/12.868880; https://doi.org/10.1117/12.868880
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