Nonlinear Optical Properties of Ag Nanopartieles/Glass Composites Measured on a Femtoseeond Time Seale

Ag nanoparticles embedded in soda-lime silicate glass were fabricated by ion-exchange and subsequently annealing method. Effects of annealing duration on the optical nonlinearity and ultrafast dynamics of Ag nanoparticles in glass were investigated by z-scan technique and pump-probe technique. The r...

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Bibliographic Details
Published in:Journal of Wuhan University of Technology. Materials science edition 2007, Vol.22 (B12), p.850-852
Main Author: YANG Xiuchun LI Weijie LI Zhihui DONG Zhiwei HUANG Wenhai QIAN Shixiong
Format: Article
Language:English
Subjects:
离子交换
银纳米粒子/玻璃复合材料
非线性光学特性
飞秒时间激光
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Summary:Ag nanoparticles embedded in soda-lime silicate glass were fabricated by ion-exchange and subsequently annealing method. Effects of annealing duration on the optical nonlinearity and ultrafast dynamics of Ag nanoparticles in glass were investigated by z-scan technique and pump-probe technique. The results indicate that the third-order optical nonlinearity increases with extending the annealing time, the fast decay process with lifetime of a few picoseconds is attributed to thermal equilibrium process of hot electrons and the energy transfer to lattices by interaction with phonons in the formed Ag nanoparticles, while the slow decay in more than one hundred picoseconds corresponds to the subsequent cooling process by a thermal diffusion from the Ag nanoparticle to the host matrix via the phonon-medium interaction. The fast decay process is accelerated with extending the annealing time.
ISSN:1000-2413
1993-0437