Phase-Locked Second Harmonic Generation in GaAs nanocavities
نویسندگان
چکیده
We theoretically study light propagation through sub-wavelength apertures on a silver substrate filled with GaAs, in the enhanced transmission regime. We predict enhanced conversion efficiencies even under high absorption conditions. ©2010 Optical Society of America OCIS codes: (240.6680) Surface Plasmon, (120.7000) Transmission, (240.3695) Linear and nonlinear light scattering from surfaces, (310.6628) Subwavelength Structures, nanostructures.
منابع مشابه
Harmonic generation in metallic, GaAs-filled nanocavities in the enhanced transmission regime at visible and UV wavelengths.
We have conducted a theoretical study of harmonic generation from a silver grating having slits filled with GaAs. By working in the enhanced transmission regime, and by exploiting phase-locking between the pump and its harmonics, we guarantee strong field localization and enhanced harmonic generation under conditions of high absorption at visible and UV wavelengths. Silver is treated using the ...
متن کاملSecond-harmonic generation at l51.6 mm in AlGaAs/Al2O3 waveguides using birefringence phase matching
Gallium arsenide is an outstanding nonlinear optical material, thanks to its high second-order nonlinear coefficient, wide transparency in the infrared, and possibility of integration with sources. However, phase matching for nonlinear frequency conversion is difficult to achieve in this isotropic, highly dispersive semiconductor. Although quasimatching by domain reversal was recently demonstra...
متن کاملField Localization and Enhancement of Phase Locked Second and Third Harmonic Generation in Absorbing Semiconductor Cavities
Field Localization and Enhancement of Phase Locked Second and Third Harmonic Generation in Absorbing Semiconductor Cavities V. Roppo, C. Cojocaru, F. Raineri, G. D’Aguanno J. Trull , Y. Halioua, R. Raj, I. Sagnes, R. Vilaseca, M. Scalora Universitat Politècnica de Catalunya, Colom 11, E-08222 Terrassa, Spain Laboratoire de Photonique et de Nanostructures (CNRS UPR20), Route de Nozay, 91460 Marc...
متن کاملSecond harmonic generation in gallium phosphide photonic crystal nanocavities with ultralow continuous wave pump power.
We demonstrate second harmonic generation in photonic crystal nanocavities fabricated in the semiconductor gallium phosphide. We observe second harmonic radiation at 750 nm with input powers of only nanowatts coupled to the cavity and conversion effciency P(out)/P(2)(in,coupled)=430%/W. The large electronic band gap of GaP minimizes absorption loss, allowing effcient conversion. Our results are...
متن کاملNonlinear optical properties of core-shell nanocavities for enhanced second-harmonic generation.
A nonlinear optical plasmonic core-shell nanocavity is demonstrated as an efficient, subwavelength coherent light source through second-harmonic generation. The nonlinear optical plasmonic nanocavity incorporates a noncentrosymmetric medium, which utilizes the entire mode volume for even-order nonlinear optical processes. In previous plasmonic nanocavities, enhancement of such processes was onl...
متن کامل