Back to Search
Start Over
Effects of thermal treatment on the third-order optical nonlinearity and ultrafast dynamics of Ag nanoparticles embedded in silicate glasses
- Source :
-
Chemical Physics Letters . Jun2009, Vol. 475 Issue 4-6, p256-259. 4p. - Publication Year :
- 2009
-
Abstract
- Abstract: Effects of thermal treatment on the third-order optical nonlinearity and ultrafast dynamics of Ag nanoparticles embedded in glasses were investigated by femtosecond time-resolved OKE and femtosecond pump–probe techniques. The results indicate that the third-order susceptibility increases from 1.1×10−11 esu to 1.48×10−9 esu with increasing the annealing temperature. The fast decay process is accelerated and its amplitude ratio increases with the thermal treatment, which could be attributed to an increase of the electron–phonon coupling through the process of treelike Ag nanoparticle aggregation. The slow relaxation time ranges from 25ps to 140ps, depending on the thermal conductivity of the matrix material. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 00092614
- Volume :
- 475
- Issue :
- 4-6
- Database :
- Academic Search Index
- Journal :
- Chemical Physics Letters
- Publication Type :
- Academic Journal
- Accession number :
- 41585632
- Full Text :
- https://doi.org/10.1016/j.cplett.2009.05.055