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Type: 
Journal
Description: 
In this paper, we report on the observation of stimulated Raman scattering in silicon nanocomposites, consisting of silicon nanoparticles dispersed in SiO2 matrix prepared by sol-gel method. Using a 1427nm cw pump laser, amplification of Stokes signal, at 1542.2nm, up to 1.4dB∕cm is demonstrated. A preliminary valuation of approximately a fivefold enhancement of the gain coefficient in Raman amplifier based on silicon nanocomposites with respect to silicon and a significant reduction of threshold power are also reported. These results have a potential interest for silicon-based Raman lasers.
Publisher: 
AIP
Publication date: 
1 Jun 2009
Authors: 
Biblio References: 
Volume: 94 Issue: 22 Pages: 221106
Origin: 
Applied Physics Letters