LASER-INDUCED MODIFICATION OF THE NONLINEAR-OPTICAL RESPONSE OF LASER-DEPOSITED CU-AL2O3 NANOCOMPOSITE FILMS

Authors
SERNA R BALLESTEROS JM SOLIS J AFONSO CN OSBORNE DH HAGLUND RF PETFORDLONG AK
Citation
R. Serna et al., LASER-INDUCED MODIFICATION OF THE NONLINEAR-OPTICAL RESPONSE OF LASER-DEPOSITED CU-AL2O3 NANOCOMPOSITE FILMS, Thin solid films, 318(1-2), 1998, pp. 96-99
Citations number
21
Categorie Soggetti
Physics, Applied","Material Science","Physics, Condensed Matter
Journal title
Thin solid films → ACNP
ISSN journal
00406090
Volume
318
Issue
1-2
Year of publication
1998
Pages
96 - 99
Database
ISI
SICI code
0040-6090(1998)318:1-2<96:LMOTNR>2.0.ZU;2-I
Abstract
Nanocomposite films of metal Cu clusters embedded in an Al2O3 matrix a re fabricated by alternate pulsed laser deposition from pure metallic Cu and ceramic Al2O3 targets. Their nonlinear index of refraction n(2) and absorption coefficient beta are determined by the Z-scan techniqu e. It is observed that upon laser exposure, the values of characterist ic nonlinear optical parameters change as a function of the pump power used. These changes are related to an irreversible transformation of the films, involving modifications of the Cu clusters. (C) 1998 Elsevi er Science S.A.