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Deep-subwavelength waveguiding via inhomogeneous second-harmonic generation

Roppo, Vito; Vincenti, Maria Antonietta; de Ceglia, Domenico; Scalora, Michael


We theoretically investigate second-harmonic generation in extremely narrow, subwavelength semiconductor and dielectric waveguides. We discuss a guiding mechanism characterized by the inhibition of diffraction and the suppression of cutoff 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.

CollectionsANU Research Publications
Date published: 2012-08-01
Type: Journal article
Source: Optics letters
DOI: 10.1364/OL.37.003093


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