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Saturable and Reverse Saturable Absorption in Nanocomposite Films of Naphthol Green B Dye-polymer System.
- Source :
- AIP Conference Proceedings; 10/20/2011, Vol. 1391 Issue 1, p630-632, 3p, 1 Chart, 4 Graphs
- Publication Year :
- 2011
-
Abstract
- Naphthol Green B dye-polyvinyl alcohol composite films were fabricated and their nonlinear absorption properties were investigated using the Z-scan technique under excitation with 5ns laser light pulses at 532 nm. The samples displayed a switchover from saturable absorption to reverse saturable absorption with increase in either intensity or concentration. The measured values of β and I<subscript>S</subscript> were found to be of the order of 10<superscript>-7</superscript> cm/W and 10<superscript>9</superscript> W/cm<superscript>2</superscript> respectively. The atomic force microscopic analysis of the composite films revealed homogeneous distribution of aggregated nanoclusters marked by a low average surface roughness ≈1.8 nm. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 0094243X
- Volume :
- 1391
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- AIP Conference Proceedings
- Publication Type :
- Conference
- Accession number :
- 66789393
- Full Text :
- https://doi.org/10.1063/1.3643632