Second harmonic generation by modal phase matching involving optical and plasmonic modes

Year: 2012

Authors: Pigozzo F.M., Modotto D., Wabnitz S.

Autors Affiliation: Dipartimento di Ingegneria dell\’Informazione, Universitá di Brescia, via Branze 38, Brescia, 25123, Italy

Abstract: The feasibility of a modal phase matching scheme between optical modes and surface plasmonic modes is demonstrated: in fact, the high effective index of a plasmonic mode allows us to obtain phase matching even in semiconductors showing a large dispersion between fundamental and second harmonic wavelengths. We design a realistic device to obtain Type-II second harmonic generation in AlGaAs-based waveguides; whereas one of the two pumps is carried by a plasmonic mode, the generated second harmonic signal is guided inside the AlGaAs multilayer, and hence it is not hampered by high propagation losses.

Journal/Review: OPTICS LETTERS

Volume: 37 (12)      Pages from: 2244  to: 2246

More Information: The authors gratefully acknowledge the support of Fondazione Cariplo, grant number 2009-2730.
KeyWords: Effective index; Large dispersion; Modal phase matching; Optical modes; Plasmonic; Propagation loss; Realistic devices; Second harmonic signals; Second harmonics; Two-pump, Aluminum gallium arsenide; Dispersions; Electric losses; Harmonic generation; Nonlinear optics; Phase matching, Plasmons
DOI: 10.1364/OL.37.002244

Citations: 11
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