Terahertz sources based on stimulated polariton scattering

Andrew J. Lee*, David J. Spence, Helen M. Pask

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

1 Citation (Scopus)
18 Downloads (Pure)


In this paper we review the field of terahertz (THz) sources which make use of the nonlinear, stimulated polariton scattering (SPS) process. A historical perspective of the technology is offered, in addition to an investigation of modern SPS-based THz sources. Breakthroughs in these source technologies have coincided with rapid developments in laser technology over the past 10 years. We are now in an age where pulsed SPS-THz sources are generating peak powers in excess of 50 ​kW, and continuous wave SPS-THz sources can be produced using diode pump powers as low as 2.3 ​W. The versatility of this approach to THz generation has enabled the generation of coherent THz radiation across continuous wave (CW), nanosecond-, and picosecond-pulsed modalities, with sources spanning the frequency range 0.5–13 ​THz. Being based on robust and well-developed, crystalline solid-state laser technology, these sources hold great promise as an enabling technology for a plethora of THz applications.

Original languageEnglish
Article number100254
Pages (from-to)1-23
Number of pages23
JournalProgress in Quantum Electronics
Publication statusPublished - 1 May 2020

Bibliographical note

Copyright 2020 The Authors. Published by Elsevier Ltd. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.


  • Laser cavity resonators
  • Nonlinear optics
  • Parametric generation
  • Parametric oscillator
  • Solid-state lasers
  • Stimulated polariton scattering (SPS)
  • Terahertz generation

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