光电子快报(英文版), 2017, 13 (2): 127, Published Online: Sep. 13, 2018
Highly efficient terahertz generation from periodically-poled RbTiOPO4
Abstract
Terahertz (THz) generation by periodically-poled RbTiOPO4(PPRTP) with a quasi-phase-matching scheme based on cascaded difference frequency generation (DFG) processes is theoretically analyzed. The cascaded Stokes and anti-Stokes interaction processes are investigated from coupled wave equations. The THz intensities and quantum conversion efficiency are calculated. Compared with that of non-cascaded DFG processes, the THz intensity in 7-order cascaded DFG processes is increased to 2.95 times. The quantum conversion efficiency of 149.9% in cascaded processes can be realized, which exceeds the Manley-Rowe limit.
LI Zhong-yang, WANG Meng-tao, WANG Si-lei, XU De-gang, YAO Jian-quan. Highly efficient terahertz generation from periodically-poled RbTiOPO4[J]. 光电子快报(英文版), 2017, 13(2): 127.