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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 36, Iss. 23 — Dec. 1, 2011
  • pp: 4674–4676

Nonlinear response of GaAs gratings in the extraordinary transmission regime

Maria Antonietta Vincenti, Domenico de Ceglia, and Michael Scalora  »View Author Affiliations


Optics Letters, Vol. 36, Issue 23, pp. 4674-4676 (2011)
http://dx.doi.org/10.1364/OL.36.004674


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Abstract

We theoretically describe a way to enhance harmonic generation from subwavelength slits milled on semiconductor substrates in strongly absorptive regimes. The metal-like response typical of semiconductors, like GaAs and GaP, triggers enhanced transmission and nonlinear optical phenomena in the deep UV range. We numerically study correlations between linear and nonlinear responses and their intricacies in infinite arrays, and highlight differences between nonlinear surface and magnetic sources, and intrinsic χ ( 2 ) and χ ( 3 ) contributions to harmonic generation. The results show promising efficiencies at wavelengths below 120 nm , and reveal coupling of TE and TM polarizations for pump and harmonic signals. A downconversion process that can regenerate pump photons with polarization orthogonal to the incident pump is also discussed.

© 2011 Optical Society of America

OCIS Codes
(190.2620) Nonlinear optics : Harmonic generation and mixing
(190.4350) Nonlinear optics : Nonlinear optics at surfaces
(240.6680) Optics at surfaces : Surface plasmons
(050.6624) Diffraction and gratings : Subwavelength structures

ToC Category:
Nonlinear Optics

History
Original Manuscript: September 28, 2011
Revised Manuscript: October 26, 2011
Manuscript Accepted: October 27, 2011
Published: December 1, 2011

Citation
Maria Antonietta Vincenti, Domenico de Ceglia, and Michael Scalora, "Nonlinear response of GaAs gratings in the extraordinary transmission regime," Opt. Lett. 36, 4674-4676 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-23-4674

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