Phase-matched sum frequency generation in strained silicon waveguides using their second-order nonlinear optical susceptibility
نویسندگان
چکیده
منابع مشابه
Tensor of the second-order nonlinear susceptibility in asymmetrically strained silicon waveguides: analysis and experimental validation.
We theoretically consider the existence of multiple nonzero components of the second-order nonlinear susceptibility tensor, χ(2), generated via strain-induced symmetry breaking in crystalline silicon. We determine that, in addition to the previously reported χ(xxy)(2) component, the χ(yyy)(2) component also becomes nonzero based on the remaining symmetry present in the strained material. In ord...
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The symmetry of crystalline silicon inhibits a second-order optical nonlinear susceptibility, χ, in complementary metal– oxide–semiconductor-compatible silicon photonic platforms. However, χ is required for important processes such as phase-only modulation, second-harmonic generation (SHG) and sum/difference frequency generation. Here, we break the crystalline symmetry by applying direct-curren...
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ژورنال
عنوان ژورنال: Optics Express
سال: 2011
ISSN: 1094-4087
DOI: 10.1364/oe.19.021707