NDLI: Influence of phase transitions on the second harmonic generation in metal nanoparticles

Content Provider	Springer Nature Link
Author	Achilli, S. Allione, M. Malvezzi, A. M. Patrini, M. Stella, A. Cheyssac, P. Kofman, R.
Copyright Year	2003
Abstract	In this work we use nonlinear optical properties of Ga nanoparticles monolayers of different average sizes embedded in dielectric matrices to investigate the liquid-solid phase transitions in these materials. Ga nanoparticles, formed by exploiting the partial wetting of liquid Ga over a SiOx surface are irradiated with fs laser pulses from a Ti:sapphire source. The resulting Second Harmonic (SH) generated in the reflection and transmission directions is measured along the phase transitions by cooling the sample from 320 K down to liquid nitrogen temperature. Hysteresis cycles are observed in the nonlinear transmission, which exhibit a strong amplification from the solid to liquid values as compared to the linear optical results. A simple model for SH generation, based on Mie scattering calculations which includes the effect of surface plasmon resonance provides a fair key for the interpretation of the observed effects.
Starting Page	223
Ending Page	226
Page Count	4
File Format	PDF
ISSN	14346060
Journal	The European Physical Journal D - Atomic, Molecular, Optical and Plasma Physics
Volume Number	24
Issue Number	1
e-ISSN	14346079
Language	English
Publisher	EDP Sciences
Publisher Date	2003-07-03
Publisher Place	Les Ulis
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics

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Influence of phase transitions on the second harmonic generation in metal nanoparticles