Melting-Induced Enhancement of the Second-Harmonic Generation from Metal Nanoparticles

A. M. Malvezzi; M. Allione; M. Patrini; A. Stella; P. Cheyssac; R. Kofman

doi:10.1103/PhysRevLett.89.087401

Melting-Induced Enhancement of the Second-Harmonic Generation from Metal Nanoparticles

A. M. Malvezzi, M. Allione, M. Patrini, A. Stella, P. Cheyssac, R. Kofman

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20 Scopus citations

Abstract

We report on the generation of second-harmonic signals by irradiating monolayers of high purity Ga nanoparticles, embedded in a [Formula presented] matrix, with femtosecond laser pulses at 800 nm. A remarkable melting-induced enhancement of the second-harmonic generation is observed in correspondence of the phase transition. In addition, the hysteresis cycle of nonlinear transmittance is shown to be amplified a factor of 80–100 with respect to the linear response and interpreted in the framework of a nonlinear effective-medium model.

Original language	English (US)
Journal	Physical Review Letters
Volume	89
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevLett.89.087401
State	Published - 2002
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.89.087401

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abstract = "We report on the generation of second-harmonic signals by irradiating monolayers of high purity Ga nanoparticles, embedded in a [Formula presented] matrix, with femtosecond laser pulses at 800 nm. A remarkable melting-induced enhancement of the second-harmonic generation is observed in correspondence of the phase transition. In addition, the hysteresis cycle of nonlinear transmittance is shown to be amplified a factor of 80–100 with respect to the linear response and interpreted in the framework of a nonlinear effective-medium model.",

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AU - Cheyssac, P.

AU - Kofman, R.

PY - 2002

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AB - We report on the generation of second-harmonic signals by irradiating monolayers of high purity Ga nanoparticles, embedded in a [Formula presented] matrix, with femtosecond laser pulses at 800 nm. A remarkable melting-induced enhancement of the second-harmonic generation is observed in correspondence of the phase transition. In addition, the hysteresis cycle of nonlinear transmittance is shown to be amplified a factor of 80–100 with respect to the linear response and interpreted in the framework of a nonlinear effective-medium model.

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Melting-Induced Enhancement of the Second-Harmonic Generation from Metal Nanoparticles

Abstract

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