Compact and coherent source of widely tunable THz radiation

T. J. Edwards*, D. Walsh, M. B. Spurr, P. G. Browne, C. F. Rae, M. H. Dunn

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

We report a THz radiation source based on the technique of non-collinear phasematched parametric generation. The source, which is compact and operable at room temperature, generates nanosecond pulses of peak power and energy greater than 3 W and 17 nJ respectively. The radiation is continuously tunable over the range 1.2-3.05 THz and is of narrow spectral bandwidth (<100 GHz). The use of intersecting pump and parametric wave cavities results in minimum threshold pump pulse energies below 1 mJ (from a Nd:YAG laser excited at 20 W, 500 μsec by a quasi-CW diode-laser) and close to 50% down-conversion efficiency when operated at twice threshold.

Original languageEnglish
Article number64020C
Pages (from-to)1-8
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume6402
DOIs
Publication statusPublished - 2006

Keywords

  • Frequency conversion
  • Nonlinear optics
  • Parametric oscillators and amplifiers
  • Terahertz generation

Fingerprint Dive into the research topics of 'Compact and coherent source of widely tunable THz radiation'. Together they form a unique fingerprint.

Cite this