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Please use this identifier to cite or link to this item: http://eprint.iitd.ac.in/handle/2074/1223

Title: Nonlinear phenomenon in nanocrystallites produced by laser-induced etching of silicon
Authors: Mavi, H S
Prusty, Sudakshina
Shukla, A K
Abbi, S C
Keywords: Nonlinear refractive index
Raman scattering
Issue Date: 2003
Citation: Optics Communications, 226(1-6), 405-413
Abstract: Self-phase modulation of continuous wave argon-ion laser beam by a medium containing silicon nanocrystallites is reported here. Refractive index of nanocrystallites shows nonlinear behavior with the intensity of probing laser beam when size of nanocrystallites is decreased below 8 nm. A simple quantitative explanation for the observed optical fringes is given in terms of distribution of sizes of nanocrystallites and intensity of laser beam. Nonlinear optical response of silicon nanocrystallites is found to have a strong correlation with the size of nanocrystallites, which are determined by the Raman scattering and photoluminescence using two-dimensional quantum confinement effects of phonons and electrons, respectively.
URI: http://eprint.iitd.ac.in/dspace/handle/2074/1223
Appears in Collections:Physics

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