The possibility of obtaining permanent photoinduced refractive index changes, up to -10(-3), in nanostructured silica-based composites has been demonstrated in SiO2:SnO2 optical-grade glass ceramics exposed to ultraviolet radiation. Optical and electron paramagnetic resonance data suggest that the negative refractive index change involves a modification at the surface of the SnO2 nanoclusters, leading to a reduction of their crystalline size.
Chiodini, N., Paleari, A., Spinolo, G. (2003). Photorefractivity in nanostructured tin-silicate glass ceramics: A radiation-induced nanocluster size effect. PHYSICAL REVIEW LETTERS, 90(5), 055507.1-055507.4 [10.1103/PhysRevLett.90.055507].
Photorefractivity in nanostructured tin-silicate glass ceramics: A radiation-induced nanocluster size effect
CHIODINI, NORBERTO;PALEARI, ALBERTO MARIA FELICE;SPINOLO, GIORGIO MARIO
2003
Abstract
The possibility of obtaining permanent photoinduced refractive index changes, up to -10(-3), in nanostructured silica-based composites has been demonstrated in SiO2:SnO2 optical-grade glass ceramics exposed to ultraviolet radiation. Optical and electron paramagnetic resonance data suggest that the negative refractive index change involves a modification at the surface of the SnO2 nanoclusters, leading to a reduction of their crystalline size.
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