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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 35, Iss. 15 — Aug. 1, 2010
  • pp: 2508–2510

Terahertz-wave surface-emitted difference-frequency generation without quasi-phase-matching technique

Yuri H. Avetisyan  »View Author Affiliations

Optics Letters, Vol. 35, Issue 15, pp. 2508-2510 (2010)

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A scheme of terahertz (THz)-wave surface-emitted difference-frequency generation (SEDFG), which lacks the drawbacks associated with the usage of periodically orientation-inverted structures, is proposed. It is shown that both material birefringence of the bulk Li Nb O 3 crystal and modal birefringence of GaAs/AlAs waveguide are sufficient to obtain SEDFG up to a frequency of ~ 3 THz . The simplicity of the proposed scheme, along with the fact that there is a much smaller THz-wave decay in nonlinear crystal, makes it a good candidate for the practical realization of efficient THz generation. The use of a GaAs waveguide with an oxidized AlAs layer is proposed for enhanced THz-wave SEDFG in the vicinity of the GaAs polariton resonance at 8 THz .

© 2010 Optical Society of America

OCIS Codes
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(190.4223) Nonlinear optics : Nonlinear wave mixing

ToC Category:
Nonlinear Optics

Original Manuscript: April 15, 2010
Revised Manuscript: June 8, 2010
Manuscript Accepted: June 13, 2010
Published: July 19, 2010

Yuri H. Avetisyan, "Terahertz-wave surface-emitted difference-frequency generation without quasi-phase-matching technique," Opt. Lett. 35, 2508-2510 (2010)

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