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arXiv · 1205.4077

Second Harmonic Generation in Deeply Sub-Wavelength Waveguides

V. Roppo·M. A. Vincenti·D. de Ceglia·M. Scalora
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Abstract

We theoretically investigate second harmonic generation in extremely narrow, sub-wavelength semiconductor and dielectric waveguides. We discuss a novel guiding mechanism characterized by the inhibition of diffraction and the suppression of cut-off limits in the context of a light trapping phenomenon that sets in under conditions of general phase and group velocity mismatch between the fundamental and the generated harmonic.

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V. Roppo, M. A. Vincenti, D. de Ceglia, M. Scalora. 2012-05-18. Second Harmonic Generation in Deeply Sub-Wavelength Waveguides. https://arxiv.org/abs/1205.4077

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