Article ID Journal Published Year Pages File Type
1484263 Journal of Non-Crystalline Solids 2008 4 Pages PDF
Abstract

Resonant Raman effects are studied for CdSxSe1−x nanoparticles in a silicate glass matrix in order to explore new possibilities of Raman amplification for telecommunication fibers. Nanoparticles with diameters ranging from less than 2 nm up to 6 nm are excited with the 458 nm, 488 nm and 633 nm laser lines corresponding both to resonance and off-resonance conditions. Due to confinement effects the resonance conditions are achieved at a given frequency by varying the size of the nanoparticles. In resonance no enhancement is observed for the silicate glass matrix but the (1LO-CdS), (2LO-CdS), (1LO CdSe + 1 LO CdS) modes are strongly enhanced showing the possibility of resonant Raman amplification of the discrete frequencies of the LO modes and of their overtones.

Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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