The nonlinear absorption properties of Ag nanoprism arrays synthesized by nanosphere lithography have been investigated by z-scan measurements. A picoseconds and low repetition rate laser source has been used to excite the electronic component of the nonlinear optical response without inducing thermal effects on the samples. Spectral effects in the nonlinear absorption response have been highlighted by performing measurements at different wavelengths, matching the laser wavelength with the dipolar and the quadrupolar surface plasmon resonances of the synthesized nanoarrays. The nonlinear absorption properties of the samples have been also investigated as a function of the polarization of the laser source and dichroism effects have been revealed.

Wavelength- and polarization-dependent nonlinear optical properties of plasmonic nanoprism arrays / Cesca, T.; Sanchez Esquivel, H.; Gemo, E.; Michieli, N.; Kalinic, B.; Garcia Ramirez, E. V.; Gomez Cervantes, J. M.; Rangel Rojo, R.; Reyes Esqueda, J. A.; Mattei, G.. - ELETTRONICO. - 9894:(2016). (Intervento presentato al convegno SPIE Photonics Europe tenutosi a Brussels (Belgium) nel 3-7 April 2016) [10.1117/12.2227065].

Wavelength- and polarization-dependent nonlinear optical properties of plasmonic nanoprism arrays

Gemo E.;
2016

Abstract

The nonlinear absorption properties of Ag nanoprism arrays synthesized by nanosphere lithography have been investigated by z-scan measurements. A picoseconds and low repetition rate laser source has been used to excite the electronic component of the nonlinear optical response without inducing thermal effects on the samples. Spectral effects in the nonlinear absorption response have been highlighted by performing measurements at different wavelengths, matching the laser wavelength with the dipolar and the quadrupolar surface plasmon resonances of the synthesized nanoarrays. The nonlinear absorption properties of the samples have been also investigated as a function of the polarization of the laser source and dichroism effects have been revealed.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2989987