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Investigation on Terahertz Generation by GaP Ridge Waveguide Based on Cascaded Difference Frequency Generation
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 Title & Authors
Investigation on Terahertz Generation by GaP Ridge Waveguide Based on Cascaded Difference Frequency Generation
Li, Zhongyang; Zhong, Kai; Bing, Pibin; Yuan, Sheng; Xu, Degang; Yao, Jianquan;
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Terahertz (THz) generation by a GaP ridge waveguide with a collinear modal phase-matching scheme based on cascaded difference frequency generation (DFG) processes is theoretically analyzed. The cascaded Stokes interaction processes and the cascaded anti-Stokes interaction processes are investigated from coupled wave equations. THz intensities and quantum conversion efficiency are calculated. Compared with non-cascaded DFG processes, THz intensities from 11-order cascaded DFG processes are increased to 5.48. The quantum conversion efficiency of 177.9% in cascaded processes can be realized, exceeding the Manley-Rowe limit.
Terahertz wave;Cascaded optical processes;Difference frequency generation;
 Cited by
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