Observation of asymmetric spectrum broadening induced by silver nanoparticles in a heavy-metal oxide glass

Details Observation of asymmetric spectrum broadening induced by silver nanoparticles in a heavy-metal oxide glass Observation of asymmetric spectrum broadening induced by silver nanoparticles in a heavy-metal oxide glass

2011-04-05

arxiv.org/abs/1104.0952v1

Physics

Optics

Accepted for publishing epl13477; EPL Journal 2011

Scientific paper

We demonstrate experimentally and support by a theoretical analysis an effect of asymmetric spectrum broadening, which results from doping of silver nanoparticles into a heavy-glass matrix, 90(0.5WO3-0.3SbPO4-0.2PbO)-10AgCl. The strong dispersion of the effective nonlinear coefficient of the composite significantly influences the spectral broadening via the self-phase modulation, and leads to a blue upshift of the spectrum. Further extension of the spectrum towards shorter wavelengths is suppressed by a growing loss caused by the plasmon resonance in the silver particles. The red-edge spectral broadening is dominated by the stimulated Raman Scattering.

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