斑点图案
光学
去相关
电子散斑干涉技术
波前
散斑噪声
散斑成像
干涉测量
传感器
探测器
光声效应
物理
材料科学
生物医学中的光声成像
声学
计算机科学
计算机视觉
作者
Huanhao Li,Fei Cao,Yingying Zhou,Zhipeng Yu,Puxiang Lai
出处
期刊:Optics Letters
[The Optical Society]
日期:2019-11-08
卷期号:44 (22): 5481-5481
被引量:10
摘要
Optical speckle patterns occur when a coherent optical wavefront is randomized but such stochastic yet deterministic information about the medium can be decoded. A simple setup is inspired to monitor the decorrelation of speckle patterns within the memory effect range when the medium is photoacoustically perturbated. Experimentally, a linear relationship is confirmed between the speckle correlation change and the peak-to-peak amplitude of the ultrasonic transducer-detected photoacoustic waves, and the detection sensitivity is comparable. Such a plain specklegram-based method may find special interests when no direct contact is allowed between the sample and the photoacoustic detector.
科研通智能强力驱动
Strongly Powered by AbleSci AI