期刊
OPTICS LETTERS
卷 35, 期 24, 页码 4151-4153出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.35.004151
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- Christian Doppler Research Association
- Federal Ministry of Economy, Family and Youth
- INPRO Innovationsgesellschaft fur fortgeschrittene Produktionssysteme in der Fahrzeugindustrie mbH
- Austrian Science Fund [S10503-N20]
- European Union [13]
- federal states of Upper Austria
We report on remote and contactless photoacoustic imaging (PAI) for the inspection of solid materials using a two-wave mixing interferometer. In this Letter, a semitransparent sample was excited with picosecond laser pulses. The local absorption of the electromagnetic radiation led to generation of broadband ultrasonic waves inside the sample. Ultrasonic waves arriving at the sample surface were detected utilizing a two-wave mixing interferometer. After data acquisition, the initial pressure distribution was reconstructed using a Fourier space synthetic aperture technique algorithm. We show the potential of PAI for the inspection of semitransparent solid materials. (C) 2010 Optical Society of America
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