| LI Zhong-yang,WANG Meng-tao,WANG Si-lei,XU De-gang,YAO Jian-quan.Highly efficient terahertz generation from periodically-poled RbTiOPO4[J].Optoelectronics Letters,2017,13(2):127-130 |
| Highly efficient terahertz generation from periodically-poled RbTiOPO4 |
| Author Name | Affiliation | | LI Zhong-yang | College of Electric Power, North China University of Water Resources and Electric Power, Zhengzhou 450045, China | | WANG Meng-tao | College of Electric Power, North China University of Water Resources and Electric Power, Zhengzhou 450045, China | | WANG Si-lei | College of Electric Power, North China University of Water Resources and Electric Power, Zhengzhou 450045, China | | XU De-gang | Institute of Laser and Opto-electronics, College of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China | | YAO Jian-quan | Institute of Laser and Opto-electronics, College of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin 300072, China |
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| 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. |
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