Artículo
Second-harmonic generation from plasmon polariton excitation on silver diffraction gratings: Comparisons of theory and experiment
Inchaussandague, Marina Elizabeth
; Gigli, Miriam L.; O'donnell, Kevin A.; Méndez, Eugenio R.; Torre, Renato; Valencia, Claudio I.
Fecha de publicación:
12/2016
Editorial:
Optical Society of America
Revista:
Journal of the Optical Society of America B-Optical Physics
ISSN:
0740-3224
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
We present a comparison between experimental and theoretical results for the diffraction efficiencies of the second harmonic light produced in the orders of silver diffraction gratings. The gratings considered are sinusoidal, havedepths of a few nanometers, and can produce significant surface plasmon polariton excitation at fundamental and second-harmonic frequencies. The calculations are based on a general expression for the nonlinear polarization ofthe surface of a homogeneous and isotropic medium, and the diffraction problems at the fundamental and harmonic frequencies are solved using a Rayleigh method. The silver gratings were fabricated using holographic lithographyand evaporative metal deposition techniques. The samples were illuminated with picosecond pulses of wavelength 1064 nm, and photon-counting techniques were used to study the diffracted orders at 532 nm, with absolutenormalization provided by a quartz reference. The diffracted orders exhibit anomalies and other features, many of which are related to plasmon polariton excitation at both fundamental and second-harmonic frequencies.Employing previously measured values for the nonlinear susceptibilities of a flat silver surface, remarkably good comparisons of theory and experiment are obtained for the second-harmonic order efficiencies.
Palabras clave:
Non-Linear Optics
,
Surface Plasmons
,
Gratings
,
Second Harmonic Generation
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Articulos(IFIBA)
Articulos de INST.DE FISICA DE BUENOS AIRES
Articulos de INST.DE FISICA DE BUENOS AIRES
Citación
Inchaussandague, Marina Elizabeth; Gigli, Miriam L.; O'donnell, Kevin A.; Méndez, Eugenio R.; Torre, Renato; et al.; Second-harmonic generation from plasmon polariton excitation on silver diffraction gratings: Comparisons of theory and experiment; Optical Society of America; Journal of the Optical Society of America B-Optical Physics; 34; 1; 12-2016; 27-37
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