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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 4 — Feb. 20, 2006
  • pp: 1582–1589

Compact source of continuously and widely-tunable terahertz radiation.

T. J. Edwards, D. Walsh, M. B. Spurr, C. F. Rae, M. H. Dunn, and P. G. Browne  »View Author Affiliations

Optics Express, Vol. 14, Issue 4, pp. 1582-1589 (2006)

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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 1W and 5 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 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.

© 2006 Optical Society of America

OCIS Codes
(140.3480) Lasers and laser optics : Lasers, diode-pumped
(190.0190) Nonlinear optics : Nonlinear optics
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.4360) Nonlinear optics : Nonlinear optics, devices
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers

ToC Category:
Nonlinear Optics

Original Manuscript: December 14, 2005
Revised Manuscript: January 27, 2006
Manuscript Accepted: February 5, 2006
Published: February 20, 2006

T. Edwards, D. Walsh, M. Spurr, C. Rae, M. Dunn, and P. Browne, "Compact source of continuously and widely-tunable terahertz radiation.," Opt. Express 14, 1582-1589 (2006)

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