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Proceedings Paper

Compact and coherent source of widely tunable THz radiation
Author(s): T. J. Edwards; D. Walsh; M. B. Spurr; P. G. Browne; C. F. Rae; M. H. Dunn
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Paper 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.

Paper Details

Date Published: 28 September 2006
PDF: 8 pages
Proc. SPIE 6402, Optics and Photonics for Counterterrorism and Crime Fighting II, 64020C (28 September 2006); doi: 10.1117/12.689621
Show Author Affiliations
T. J. Edwards, Univ. of St. Andrews (United Kingdom)
D. Walsh, Univ. of St. Andrews (United Kingdom)
M. B. Spurr, Univ. of St. Andrews (United Kingdom)
P. G. Browne, Macquarie Univ. (Australia)
C. F. Rae, Univ. of St. Andrews (United Kingdom)
M. H. Dunn, Univ. of St. Andrews (United Kingdom)


Published in SPIE Proceedings Vol. 6402:
Optics and Photonics for Counterterrorism and Crime Fighting II
Colin Lewis; Gari P. Owen, Editor(s)

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