Nonlinear optical absorption of InAs nanocrystals embedded in SiO2 thin films

Citation
J. Shi et al., Nonlinear optical absorption of InAs nanocrystals embedded in SiO2 thin films, SOL ST COMM, 110(11), 1999, pp. 645-649
Citations number
9
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SOLID STATE COMMUNICATIONS
ISSN journal
0038-1098 → ACNP
Volume
110
Issue
11
Year of publication
1999
Pages
645 - 649
Database
ISI
SICI code
0038-1098(1999)110:11<645:NOAOIN>2.0.ZU;2-9
Abstract
Nonlinear optical absorption of InAs nanocrystals embedded in SiO2, films p repared by radio-frequency magnetron cosputtering was studied by Z-scan tec hnique using a single Gaussian beam of a He-Ne laser (633 nm). Both two-pho ton absorption and saturation absorption were observed. The enhanced third- order nonlinear optical absorption coefficients were obtained in the compos ite film. Our results indicate that the type and magnitude of the nonlinear optical absorption coefficient of the composite films are related to the a verage size of the nanocrystals. (C) 1999 Elsevier Science Ltd. All rights reserved.