光学
探测器
光电探测器
超声波传感器
极化(电化学)
物理
材料科学
光束
干扰(通信)
带宽(计算)
梁(结构)
声学
电信
物理化学
化学
频道(广播)
计算机科学
作者
Pengfei Zhang,Yuhan Miao,Yu Ma,Pengfei Niu,Liang Zhang,Limin Zhang,Feng Gao
出处
期刊:Optics Letters
[The Optical Society]
日期:2022-09-13
卷期号:47 (18): 4790-4790
被引量:2
摘要
We report on an all-optical ultrasonic detecting method based on differential interference. A linearly polarized probe beam is split into two closely separated ones with orthogonal polarization. After interacting with propagating ultrasonic waves in a coupling media, the split beams are recombined into one beam, with its polarization being changed into an elliptical one by the elastic-optical effect. The recombined beam is filtered by an analyzer and detected by a photodetector. The bandwidth and noise-equivalent pressure (NEP) of the acoustic detector are determined to be 107.4 MHz and 2.18 kPa, respectively. We also demonstrate its feasibility for photoacoustic microscopy (PAM) using agar-embedded phantoms.
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