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Saturation of absorption in noble metal doped nanocomposite glass film excited by evanescent light field

Saturation of absorption in noble metal doped nanocomposite glass film excited by evanescent light field
Saturation of absorption in noble metal doped nanocomposite glass film excited by evanescent light field
A leaky-waveguide configuration is proposed for saturable absorbers. Evanescent field interaction between the leaky-mode and the absorber layer reduces material degradation at high power levels while providing control over the interaction length and thus the modulation strength and nonsaturable losses simply by tuning the coupling angle around the resonance of the leaky-mode. This concept was applied to a sol-gel silicon-dioxide glass film doped with gold nanoparticles. Saturation of the surface plasmon resonance absorption was demonstrated with modulation depths of up to 34% achieved.
doping, glass, gold, nanocomposites, optical saturable absorption, sol-gel processing, surface plasmon resonance
0003-6951
2611011-2611013
Corbari, Costantino
273904e8-5f90-4110-bc17-3d3f2c27d461
Beresna, Martynas
a6dc062e-93c6-46a5-aeb3-8de332cdec7b
Kazansky, Peter G.
a5d123ec-8ea8-408c-8963-4a6d921fd76c
Corbari, Costantino
273904e8-5f90-4110-bc17-3d3f2c27d461
Beresna, Martynas
a6dc062e-93c6-46a5-aeb3-8de332cdec7b
Kazansky, Peter G.
a5d123ec-8ea8-408c-8963-4a6d921fd76c

Corbari, Costantino, Beresna, Martynas and Kazansky, Peter G. (2010) Saturation of absorption in noble metal doped nanocomposite glass film excited by evanescent light field. Applied Physics Letters, 97 (26), 2611011-2611013. (doi:10.1063/1.3529950).

Record type: Article

Abstract

A leaky-waveguide configuration is proposed for saturable absorbers. Evanescent field interaction between the leaky-mode and the absorber layer reduces material degradation at high power levels while providing control over the interaction length and thus the modulation strength and nonsaturable losses simply by tuning the coupling angle around the resonance of the leaky-mode. This concept was applied to a sol-gel silicon-dioxide glass film doped with gold nanoparticles. Saturation of the surface plasmon resonance absorption was demonstrated with modulation depths of up to 34% achieved.

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More information

Published date: 2010
Keywords: doping, glass, gold, nanocomposites, optical saturable absorption, sol-gel processing, surface plasmon resonance

Identifiers

Local EPrints ID: 174617
URI: http://eprints.soton.ac.uk/id/eprint/174617
ISSN: 0003-6951
PURE UUID: 6b0fecfc-d6df-4dba-ade5-96035930fa64

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Date deposited: 15 Feb 2011 10:31
Last modified: 06 Sep 2019 16:31

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Contributors

Author: Costantino Corbari

University divisions

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