Optoelectronics Letters

, Volume 13, Issue 2, pp 127–130 | Cite as

Highly efficient terahertz generation from periodically-poled RbTiOPO4

  • Zhong-yang Li (李忠洋)
  • Meng-tao Wang (王孟涛)
  • Si-lei Wang (王思磊)
  • De-gang Xu (徐德刚)
  • Jian-quan Yao (姚建铨)


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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Copyright information

© Tianjin University of Technology and Springer-Verlag Berlin Heidelberg 2017

Authors and Affiliations

  • Zhong-yang Li (李忠洋)
    • 1
  • Meng-tao Wang (王孟涛)
    • 1
  • Si-lei Wang (王思磊)
    • 1
  • De-gang Xu (徐德刚)
    • 2
  • Jian-quan Yao (姚建铨)
    • 2
  1. 1.College of Electric PowerNorth China University of Water Resources and Electric PowerZhengzhouChina
  2. 2.Institute of Laser and Opto-electronics, College of Precision Instrument and Opto-electronics EngineeringTianjin UniversityTianjinChina

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