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Nonlinear optical response of Au and Ag nanoparticles doped polyvinylpyrrolidone thin films
- Source :
-
Physics Letters A . Jan2009, Vol. 373 Issue 5, p592-595. 4p. - Publication Year :
- 2009
-
Abstract
- Abstract: Colloidal Au and colloidal Ag were prepared by chemical reaction method and the nonlinear optical properties of Au and Ag nanoparticles doped polyvinylpyrrolidone (PVP) composite films were investigated using Z-scan technique with 38 ps pulses at 532 nm. Open aperture Z-scan measurements indicated that both the Au/PVP and Ag/PVP composite films exhibited reverse saturable absorption. Nonlinear absorption coefficients and third-order nonlinear refractive indices were determined. The mechanisms accounting for the process of nonlinear refractions were analyzed and the figures of merit W and T of the Au/PVP and Ag/PVP composite films were evaluated. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 03759601
- Volume :
- 373
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- Physics Letters A
- Publication Type :
- Academic Journal
- Accession number :
- 36015390
- Full Text :
- https://doi.org/10.1016/j.physleta.2008.12.002