Highly efficient terahertz generation from periodically-poled RbTiOPO4

• 来源期刊: 光电子快报（英文版）
• 年，卷（期）: 2017,（2）
• 页码范围: 127-130
• 页数: 4页
• 语种: 英文
• DOI: 10.1007/s11801-017-6253-0

摘要

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.