TITLE

Modification of the scanning laser acoustic microscope for holographic and tomographic imaging

AUTHOR(S)
Lee, Hua; Ricci, Carlos
PUB. DATE
November 1986
SOURCE
Applied Physics Letters;11/17/1986, Vol. 49 Issue 20, p1336
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
In this letter, we report the modification of the scanning laser acoustic microscope for the purpose of holographic and tomographic imaging. A very simple quadrature receiver is utilized to perform holographic recording of the resultant acoustic wave field. This quadrature detector mainly consists of a highpass-lowpass circuit pair and a multiplier, and is capable of generating accurate dual reference signals. In addition to the circuit design and frequency characteristics of the filter pair, we also provide the holographic image of a range finder reconstructed by using backward propagation method to demonstrate the resolution improvement due to this modification.
ACCESSION #
9821445

 

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