Heterodyne detection of ultrasound from rough surfaces using a double phase conjugate mirror
作者:
Philippe Delaye,
Alain Blouin,
Denis Drolet,
Jean‐Pierre Monchalin,
期刊:
Applied Physics Letters
(AIP Available online 1995)
卷期:
Volume 67,
issue 22
页码: 3251-3253
ISSN:0003-6951
年代: 1995
DOI:10.1063/1.114888
出版商: AIP
数据来源: AIP
摘要:
We present an improved version of the classical heterodyne interferometer for ultrasound detection, which includes a double phase conjugate mirror (DPCM) in the detection arm. The DPCM performs wave front adaptation to plane wave of the speckled beam scattered by the rough surface of the sample. The performances of the system are analyzed regarding the transmission (≊30%) and fidelity (≊70%) of the phase conjugation and the response time and e´tendue of the device. An example of application to the detection of laser generated ultrasound is also presented.
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