Optical properties of metal-coated silicon nanocrystals

S. B. Korovin; B. B. Krinetskii; Vladimir I. Pustovoy; S. Fadeeva; M. Konstantaki; E. Koudoumas; Stelios Couris

doi:10.1117/12.378195

25 February 2000 Optical properties of metal-coated silicon nanocrystals

S. B. Korovin, B. B. Krinetskii, Vladimir I. Pustovoy, S. Fadeeva, M. Konstantaki, E. Koudoumas, Stelios Couris

Proceedings Volume 4070, ALT '99 International Conference on Advanced Laser Technologies; (2000) https://doi.org/10.1117/12.378195
Event: ALT'99 International Conference: Advanced Laser Technologies, 1999, Potenza-Lecce, Italy

Abstract

The linear and non-linear optical properties of gold-coated nano-crystals embedded in glycerol have been investigated. The optical absorption spectra and the non-linear absorption of these nanostructures have been determined under various excitation conditions. The peak of the plasmon resonance like curve has been observed to be blue shifted compared to the plasmon peak of colloidal gold particles. The resonance behavior exhibited by the gold coated silicon nano-crystals is interpreted in terms of the third order non-linear susceptibility which is expressed as a saturation absorption behavior of the samples. The effect of the charged interface gold film, which covers the nanocrystals, on the electron band structure and on the linear and non-linear optical properties are discussed.

Citation Download Citation

S. B. Korovin, B. B. Krinetskii, Vladimir I. Pustovoy, S. Fadeeva, M. Konstantaki, E. Koudoumas, and Stelios Couris "Optical properties of metal-coated silicon nanocrystals", Proc. SPIE 4070, ALT '99 International Conference on Advanced Laser Technologies, (25 February 2000); https://doi.org/10.1117/12.378195

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