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Title: Nonlinear optical studies of lead lanthanum borate glass doped with Au nanoparticles
Authors: Rajaramakrishnaa, R.
Karuthedathb, Safakath
Anavekar, R.V.
Jain, H.
Issue Date: 15-Jul-2012
Publisher: Elsevier B.V.
Citation: Journal of Non-Crystalline Solids, 2012, Vol.358, p1667-16672
Abstract: 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 Tg = 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 ~ 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.
Description: Restricted Access.
ISSN: 0022-3093
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Copyright: 2012 Elsevier B.V.
Appears in Collections:Research Papers (LAMP)

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