Femtosecond nonlinear optical response of metallophthalocyanine films

Citation
Gh. Ma et al., Femtosecond nonlinear optical response of metallophthalocyanine films, SOL ST COMM, 118(12), 2001, pp. 633-638
Citations number
25
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
SOLID STATE COMMUNICATIONS
ISSN journal
0038-1098 → ACNP
Volume
118
Issue
12
Year of publication
2001
Pages
633 - 638
Database
ISI
SICI code
0038-1098(2001)118:12<633:FNOROM>2.0.ZU;2-X
Abstract
The third-order nonlinear optical properties of copper phthalocyanine (CuPc ) and magnesium phthalocyanine (MgPc) films were investigated by femtosecon d optical Kerr effect (OKE) and pump-probe techniques. For both CuPc and Mg Pc, the third-order nonlinear optical susceptibility was enhanced at least by one order of magnitude in comparison with that of the metal-free Pc, and the enhancement effect arises from different mechanisms for both films. Fr om pump-probe measurement, quite different transmittance and decay behavior between CuPc and MgPc films were observed. The CuPc films show an ultrafas t decay, while the decay behavior of MgPc him is complicated with several t emporal components, which could be explained by the relaxation of singlet e xcited state. (C) 2001 Published by Elsevier Science Ltd.