Back to Search
Start Over
Influence of phase transitions on the second harmonic generation in metal nanoparticles.
- Source :
-
European Physical Journal D (EPJ D) . Jun2003, Vol. 24 Issue 1-3, p223-226. 4p. - Publication 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. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14346060
- Volume :
- 24
- Issue :
- 1-3
- Database :
- Academic Search Index
- Journal :
- European Physical Journal D (EPJ D)
- Publication Type :
- Academic Journal
- Accession number :
- 16708553
- Full Text :
- https://doi.org/10.1140/epjd/e2003-00192-7