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  • Vol. 27, Iss. 16 — Aug. 15, 2002
  • pp: 1454–1456

Efficient, tunable, and coherent 0.18–5.27-THz source based on GaSe crystal

Wei Shi, Yujie J. Ding, Nils Fernelius, and Konstantin Vodopyanov  »View Author Affiliations


Optics Letters, Vol. 27, Issue 16, pp. 1454-1456 (2002)
http://dx.doi.org/10.1364/OL.27.001454


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Abstract

Continuously tunable and coherent radiation in the wide range 56.8–1618 μm (0.18–5.27 THz) has been achieved as a novel and promising terahertz source based on collinear phase-matched difference frequency generation in a GaSe crystal. This source has the advantages of high coherence, simplicity for tuning, simple alignment, and stable output. The peak output power for the terahertz radiation reaches 69.4 W at a wavelength of 196 μm (1.53 THz), which corresponds to a photon conversion efficiency of 3.3%. A simple optimization of the design can yield a compact terahertz source.

© 2002 Optical Society of America

OCIS Codes
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.4400) Nonlinear optics : Nonlinear optics, materials

Citation
Wei Shi, Yujie J. Ding, Nils Fernelius, and Konstantin Vodopyanov, "Efficient, tunable, and coherent 0.18–5.27-THz source based on GaSe crystal," Opt. Lett. 27, 1454-1456 (2002)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-27-16-1454


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