The influence of surface modification on the femtosecond optical Kerr effect of PbS nanoparticles

Authors
Guo, L Wu, ZH Ai, XC Li, QS Zhu, HS Yang, SH
Citation
L. Guo et al., The influence of surface modification on the femtosecond optical Kerr effect of PbS nanoparticles, OPT MATER, 14(3), 2000, pp. 247-250
Citations number
16
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
OPTICAL MATERIALS
ISSN journal
09253467 → ACNP
Volume
14
Issue
3
Year of publication
2000
Pages
247 - 250
Database
ISI
SICI code
0925-3467(200007)14:3<247:TIOSMO>2.0.ZU;2-E
Abstract
PbS nanoparticles modified by cetyltrimethylammonium bromide (CTAB) and sod ium dodecyl benzene sulphonate (DBS) have been synthesized, The subpicoseco nd optical nonlinearity of these PbS nanoparticles was investigated by usin g the femtosecond optical Kerr effect (OKE) experiment. The spectral behavi or and the OKE results confirm that the surfactant environment has crucial rule on the linear and nonlinear optical properties. From the transient res ponse, the relaxation time of the samples has been proved shorter than the laser pulse width. (C) 2000 Elsevier Science B.V. All rights reserved.