Imaging gigahertz surface acoustic waves through the photoelastic effect
Imaging gigahertz surface acoustic waves through the photoelastic effect
复制标题
DOI：
10.1364/josab.27.002632
复制
发表时间：
2010-12-01
影响因子：
1.9
通讯作者：
Wright, Oliver B.
中科院分区：
文献类型：
--
作者：
Saito, Taiki;Matsuda, Osamu;Wright, Oliver B.
本文利用光弹性效应对表面声波成像进行了实验和深入分析。光泵脉冲在玻璃基板上的薄金膜中产生千兆赫表面声波，通过监测光学反射率的超快变化在时域上成像。我们演示了如何通过测量从衬底侧入射的两个不同的光学探针脉冲偏振来获得平面内声学剪切应变分量的图像。(C) 2010年美国光学学会
This paper presents experiments and in-depth analysis of the imaging of surface acoustic waves by means of the photoelastic effect. Gigahertz surface acoustic waves, generated by optical pump pulses in a thin gold film on a glass substrate, are imaged in the time domain by monitoring ultrafast changes in optical reflectivity. We demonstrate how images of the in-plane acoustic shear strain component can be obtained by measurements with two different optical probe pulse polarizations incident from the substrate side. (C) 2010 Optical Society of America