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Nonlinear Optical Properties of Ag Nanoclusters and Nanoparticles Dispersed in a Glass Hostстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Mai Hong Hanh, Kaydashev Vladimir E., Tikhomirov Victor K., Janssens Ewald, Shestakov Mikhail V., Meledina Maria, Turner Stuart, Van Tendeloo Gustaaf, Moshchalkov Victor V., Lievens Peter
- Журнал: Journal of Physical Chemistry C
- Том: 118
- Номер: 29
- Год издания: 2014
- Издательство: American Chemical Society
- Местоположение издательства: United States
- Первая страница: 15995
- Последняя страница: 16002
- DOI: 10.1021/jp502294u
- Аннотация: The nonlinear absorption of Ag atomic clusters and nanoparticles dispersed in a transparent oxyfluoride glass host has been studied. The as-prepared glass, containing 0.15 at.% Ag, shows an absorption band in the UV/violet attributed to the presence of amorphous Ag atomic nanoclusters with an average size of 1.2 nm. Upon heat-treatment the Ag nanoclusters coalesce into larger nanoparticles that show a surface plasmon absorption band in the visible. Open aperture z-scan experiments using 480 nm nanosecond laser pulses demonstrated nonsaturated and saturated nonlinear absorption with large nonlinear absorption indices for the Ag nanoclusters and nanoparticles, respectively. These properties are promising, e.g., for applications in optical limiting and object’s contrast enhancement.
- Добавил в систему: Шестаков Михаил Викторович