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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 24 — Nov. 21, 2011
  • pp: 24577–24582

Forward and backward THz-wave difference frequency generations from a rectangular nonlinear waveguide

Yen-Chieh Huang, Tsong-Dong Wang, Yen-Hou Lin, Ching-Han Lee, Ming-Yun Chuang, Yen-Yin Lin, and Fan-Yi Lin  »View Author Affiliations

Optics Express, Vol. 19, Issue 24, pp. 24577-24582 (2011)

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We report forward and backward THz-wave difference frequency generations at 197 and 469 μm from a PPLN rectangular crystal rod with an aperture of 0.5 (height in z) × 0.6 (width in y) mm2 and a length of 25 mm in x. The crystal rod appears as a waveguide for the THz waves but as a bulk material for the optical mixing waves near 1.54 μm. We measured enhancement factors of 1.6 and 1.8 for the forward and backward THz-wave output powers, respectively, from the rectangular waveguide in comparison with those from a PPLN slab waveguide of the same length, thickness, and domain period under the same pump and signal intensity of 100 MW/cm2.

© 2011 OSA

OCIS Codes
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes
(190.4223) Nonlinear optics : Nonlinear wave mixing

ToC Category:
Nonlinear Optics

Original Manuscript: September 6, 2011
Revised Manuscript: October 5, 2011
Manuscript Accepted: November 6, 2011
Published: November 16, 2011

Yen-Chieh Huang, Tsong-Dong Wang, Yen-Hou Lin, Ching-Han Lee, Ming-Yun Chuang, Yen-Yin Lin, and Fan-Yi Lin, "Forward and backward THz-wave difference frequency generations from a rectangular nonlinear waveguide," Opt. Express 19, 24577-24582 (2011)

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