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Optics Letters

Optics Letters

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  • Vol. 36, Iss. 5 — Mar. 1, 2011
  • pp: 704–706

Enhanced second-harmonic generation from resonant GaAs gratings

D. de Ceglia, G. D’Aguanno, N. Mattiucci, M. A. Vincenti, and M. Scalora  »View Author Affiliations


Optics Letters, Vol. 36, Issue 5, pp. 704-706 (2011)
http://dx.doi.org/10.1364/OL.36.000704


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Abstract

We theoretically study second harmonic generation in nonlinear, GaAs gratings. We find large enhancement of conversion efficiency when the pump field excites the guided mode resonances of the grating. Under these circumstances the spectrum near the pump wavelength displays sharp resonances characterized by dramatic enhancements of local fields and favorable conditions for second-harmonic generation, even in regimes of strong linear absorption at the harmonic wavelength. In particular, in a GaAs grating pumped at 1064 nm , we predict second-harmonic conversion efficiencies approximately 5 orders of magnitude larger than conversion rates achievable in either bulk or etalon structures of the same material.

© 2011 Optical Society of America

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(190.2620) Nonlinear optics : Harmonic generation and mixing
(310.2790) Thin films : Guided waves

ToC Category:
Nonlinear Optics

History
Original Manuscript: December 20, 2010
Revised Manuscript: January 21, 2011
Manuscript Accepted: January 25, 2011
Published: February 24, 2011

Citation
D. de Ceglia, G. D’Aguanno, N. Mattiucci, M. A. Vincenti, and M. Scalora, "Enhanced second-harmonic generation from resonant GaAs gratings," Opt. Lett. 36, 704-706 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-5-704

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