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Optics Letters

Optics Letters


  • Vol. 30, Iss. 14 — Jul. 15, 2005
  • pp: 1861–1863

Generation of backward terahertz waves in GaSe crystals

Wei Shi and Yujie J. Ding  »View Author Affiliations

Optics Letters, Vol. 30, Issue 14, pp. 1861-1863 (2005)

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We have observed a backward-propagating terahertz wave by mixing two coherent infrared beams in two GaSe crystals. For the 47 mm long crystal, the output wavelength can be tuned in the wide range of 167.6 to 2060 µm (0.146 to 1.79 THz), whereas the output peak power reaches 217 W. The corresponding power conversion efficiency is ∼0.03%.

© 2005 Optical Society of America

OCIS Codes
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes

Wei Shi and Yujie J. Ding, "Generation of backward terahertz waves in GaSe crystals," Opt. Lett. 30, 1861-1863 (2005)

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