We show that Sn O2 nanoclusters in silica interact with ultrashort infrared laser pulses focused inside the material generating a hydrostatic compression and photoelastic response of the surrounding glass. This effect, together with the laser-induced nanocluster amorphization, gives rise to positive or negative refractive-index changes, up to 10-2, depending on the beam-power density. This result points out a wide tuning of the refractive index patterns obtainable in silica-based optical technology. © 2006 American Institute of Physics.
Paleari, A., Franchina, E., Chiodini, N., Lauria, A., Bricchi, E., Kazansky, P. (2006). SnO2 nanoparticles in silica: Nanosized tools for femtosecond-laser machining of refractive index patterns. APPLIED PHYSICS LETTERS, 88(13), 131912/1-131912/3 [10.1063/1.2192579].
SnO2 nanoparticles in silica: Nanosized tools for femtosecond-laser machining of refractive index patterns
PALEARI, ALBERTO MARIA FELICE;CHIODINI, NORBERTO;
2006
Abstract
We show that Sn O2 nanoclusters in silica interact with ultrashort infrared laser pulses focused inside the material generating a hydrostatic compression and photoelastic response of the surrounding glass. This effect, together with the laser-induced nanocluster amorphization, gives rise to positive or negative refractive-index changes, up to 10-2, depending on the beam-power density. This result points out a wide tuning of the refractive index patterns obtainable in silica-based optical technology. © 2006 American Institute of Physics.
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