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

Zhaolu Wang | Zendy; Hongjun Liu | Zendy; Nan Huang | Zendy; Qibing Sun | Zendy; Jin Wen | Zendy

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

Author(s) -

Zhaolu Wang,

Hongjun Liu,

Nan Huang,

Qibing Sun,

Jin Wen

Publication year - 2012

Publication title -

optics express

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.20.008920

Subject(s) - terahertz radiation , four wave mixing , optics , materials science , wavelength , silicon , waveguide , dispersion (optics) , energy conversion efficiency , optoelectronics , silicon photonics , optical pumping , nonlinear optics , laser , physics

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%.

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