Journal
JOURNAL OF NON-CRYSTALLINE SOLIDS
Volume 358, Issue 14, Pages 1667-1672Publisher
ELSEVIER
DOI: 10.1016/j.jnoncrysol.2012.04.031
Keywords
TEM; SAED; Z-Scan technique
Funding
- DAE-BRNS [2010/34/25/BRNS/1161]
- NSF's International Materials Institute for New Functionality in Glass [DMR-0844014]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [844014] Funding Source: National Science Foundation
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Synthesis, characterization and optical nonlinearity of lead lanthanum borate glass embedded with gold nanoparticles have been investigated. DSC thermogram shows characteristics glass transition temperature at T-g = 775 K. Glasses doped with Au were subjected to heat treatment at 823 K with different annealing time and then, slowly cooled to room temperature show striking ruby color. SAED and TEM analyses have confirmed that f.c.c. Au nanoparticles of similar to 40 nm size are present in these glasses. An absorption peak centered on 563 nm has been observed in heat treated samples, which is attributed to surface plasmon resonance of gold nanoparticles. Nonlinear optical studies with open aperture Z-Scan technique show saturable absorption for heat treated samples at low intensity and reverse saturable absorption in samples without heat treatment at high intensity. (C) 2012 Elsevier B.V. All rights reserved.
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