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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 8 — Apr. 9, 2012
  • pp: 8920–8928

Efficient terahertz-wave generation via four-wave mixing in silicon membrane waveguides

Zhaolu Wang, Hongjun Liu, Nan Huang, Qibing Sun, and Jin Wen  »View Author Affiliations

Optics Express, Vol. 20, Issue 8, pp. 8920-8928 (2012)

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Terahertz (THz) wave generation via four-wave mixing (FWM) in silicon membrane waveguides is theoretically investigated with mid-infrared laser pulses. Compared with the conventional parametric amplification or wavelength conversion based on FWM in silicon waveguides, which needs a pump wavelength located in the anomalous group-velocity dispersion (GVD) regime to realize broad phase matching, the pump wavelength located in the normal GVD regime is required to realize collinear phase matching for the THz-wave generation via FWM. The pump wavelength and rib height of the silicon membrane waveguide can be tuned to obtain a broadband phase matching. Moreover, the conversion efficiency of the THz-wave generation is studied with different pump wavelengths and rib heights of the silicon membrane waveguides, and broadband THz-wave can be obtained with high efficiency exceeding 1%.

© 2012 OSA

OCIS Codes
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing
(230.7370) Optical devices : Waveguides
(310.2790) Thin films : Guided waves

ToC Category:
Nonlinear Optics

Original Manuscript: February 16, 2012
Revised Manuscript: March 17, 2012
Manuscript Accepted: March 20, 2012
Published: April 2, 2012

Zhaolu Wang, Hongjun Liu, Nan Huang, Qibing Sun, and Jin Wen, "Efficient terahertz-wave generation via four-wave mixing in silicon membrane waveguides," Opt. Express 20, 8920-8928 (2012)

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