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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 17 — Aug. 17, 2009
  • pp: 14832–14838

Optimized terahertz-wave generation

Katsuhiko Miyamoto, Seigo Ohno, Masazumi Fujiwara, Hiroaki Minamide, Hideki Hashimoto, and Hiromasa Ito  »View Author Affiliations


Optics Express, Vol. 17, Issue 17, pp. 14832-14838 (2009)
http://dx.doi.org/10.1364/OE.17.014832


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Abstract

An effective and widely tunable means of producing terahertz (THz) radiation using difference-frequency generation (DFG) in an organic N-benzyl-2-methyl-4-nitroaniline (BNA) crystal was demonstrated by optimizing the pump wavelengths. We calculated the (wideband) refractive index and coherence length mapping of BNA to establish the optimum phase-matching condition of the DFG configuration. To satisfy the phase-matching conditions over the range 0.1–20 THz, both pump wavelengths were varied from 780 to 950 nm, and the optical wavelength dependency of the THz-wave output was clearly observed. We expanded the range of THz-wave generation and increased the power output to ten times that obtained using previous methods.

© 2009 OSA

OCIS Codes
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers

ToC Category:
Nonlinear Optics

History
Original Manuscript: June 19, 2009
Revised Manuscript: July 16, 2009
Manuscript Accepted: July 19, 2009
Published: August 6, 2009

Citation
Katsuhiko Miyamoto, Seigo Ohno, Masazumi Fujiwara, Hiroaki Minamide, Hideki Hashimoto, and Hiromasa Ito, "Optimized terahertz-wave generation using BNA-DFG," Opt. Express 17, 14832-14838 (2009)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-17-14832


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