Femtosecond studies of coherent acoustic phonons in gold nanoparticles embedded in TiO2 thin films

被引：27

作者：

Qian, W

Lin, L

Deng, YJ

Xia, ZJ

Zou, YH ^{[1
]}

Wong, GKL

机构：

[1] Peking Univ, Mesoscop Phys Lab, Dept Phys, Beijing 100871, Peoples R China

[2] Hong Kong Univ Sci & Technol, Dept Phys, Kowloon, Peoples R China

来源：

JOURNAL OF APPLIED PHYSICS | 2000年 / 87卷 / 01期

关键词：

D O I：

10.1063/1.371907

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

0.15 THz coherent acoustic phonons have been observed in gold nanoparticles embedded in TiO2 thin films by virtue of femtosecond time-resolved transmissivity measurements at room temperature. The generation of these phonons is attributed to the resonant excitation of localized surface plasmon in gold nanoparticles. Their damping time is 55 ps which is acquired by fitting the oscillatory part of time-resolved transmissivity to single exponentially damped cosine function. (C) 2000 American Institute of Physics. [S0021-8979(00)03501-5].

引用

收藏

页码：612 / 614

页数：3

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