Influence of Adsorbed Metal Atoms on Light Absorption by a Fused Silica Surface

Optical properties of submonolayer metal (silver, gold, and indium) films obtained by laser ablation on a fused silica surface have been investigated. Extinction and absorption spectra of silica and substrates with deposited films and difference spectra are obtained. The minimum values of the effect...

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Bibliographic Details
Published inOptics and spectroscopy Vol. 128; no. 12; pp. 2046 - 2049
Main Author Leonov, N. B.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.12.2020
Springer Nature B.V
Subjects
Absorption spectra
Charge transfer
Coordination compounds
Electromagnetic absorption
Fused silica
Laser ablation
Lasers
Optical Devices
Optical properties
Optics
Optics of Surfaces and Interfaces
Photonics
Physics
Physics and Astronomy
Silicon dioxide
Silver
Substrates
Surface chemistry
Thickness
plasmon resonance
Tamm levels
adsorption
non-bridging atom
defects
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Summary:Optical properties of submonolayer metal (silver, gold, and indium) films obtained by laser ablation on a fused silica surface have been investigated. Extinction and absorption spectra of silica and substrates with deposited films and difference spectra are obtained. The minimum values of the effective metal-film thicknesses, at which islands begin to nucleate and localized plasmon resonances manifest themselves, are determined. It is shown that the absorption of the silica substrate–metal film complex exceeds the sum of absorptions by the silica surface and metal atoms. A relationship between this phenomenon and charge transfer from metal to defects on the substrate surface is revealed.
ISSN:0030-400X
1562-6911
DOI:10.1134/S0030400X20120954