Size and Shape Resonances in Second Harmonic Generation from Silver Nanocavities

The nonlinear response of subwavelength nanocavities in thin silver films are investigated. We report on significant enhancements of the second harmonic generation (SHG) when the fundamental wavelength matches dimensional resonances within the nanocavities. The nonlinear polarization properties of t...

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Veröffentlicht in:	Journal of physical chemistry. C 2013-10, Vol.117 (43), p.22377-22382
Hauptverfasser:	Salomon, Adi, Zielinski, Marcin, Kolkowski, Radoslaw, Zyss, Joseph, Prior, Yehiam
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Condensed matter: structure, mechanical and thermal properties Exact sciences and technology Nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures Physics Structure of solids and liquids crystallography
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Zusammenfassung:	The nonlinear response of subwavelength nanocavities in thin silver films are investigated. We report on significant enhancements of the second harmonic generation (SHG) when the fundamental wavelength matches dimensional resonances within the nanocavities. The nonlinear polarization properties of the nanocavities are studied as well and found to be correlated with the cavity shape and symmetry. In some nanocavities with internal nanocorrugations, giant field enhancements are observed, making them excellent candidates for high sensitivity spectroscopy.
ISSN:	1932-7447 1932-7455
DOI:	10.1021/jp403010q