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Deep-subwavelength waveguiding via inhomogeneous second-harmonic generation.

Authors
Type
Published Article
Journal
Optics Letters
1539-4794
Publisher
The Optical Society
Publication Date
Volume
37
Issue
15
Pages
3093–3095
Identifiers
DOI: 10.1364/OL.37.003093
PMID: 22859096
Source
Medline

Abstract

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.

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