Title :
Non-destructive and non-contact thickness measurement for optically opaque samples by optical fiber heterodyne interferometry system
Author :
Jonghyun Eom ; Seong Jun Park ; Young Ho Kim ; Byeong Ha Lee
Author_Institution :
Dept. of Med. Syst. Eng., Gwangju Inst. of Sci. & Technol., Gwangju, South Korea
fDate :
June 30 2013-July 4 2013
Abstract :
We demonstrate a scheme of non-destructive and noncontact thickness measurement. By monitoring the laser-induced acoustic pressure wave with a compact optical fiber heterodyne interferometer, we could measure the thickness of an opaque or metallic sample.
Keywords :
fibre optic sensors; light interferometry; photoacoustic spectroscopy; signal processing equipment; thickness measurement; compact optical fiber heterodyne interferometer; laser induced acoustic pressure; noncontact thickness measurement; nondestructive thickness measurement; optical fiber heterodyne interferometry system; optically opaque sample; Acoustic measurements; Acoustics; Frequency modulation; Measurement by laser beam; Optical interferometry; Optical surface waves; Thickness measurement;
Conference_Titel :
Lasers and Electro-Optics Pacific Rim (CLEO-PR), 2013 Conference on
Conference_Location :
Kyoto
DOI :
10.1109/CLEOPR.2013.6600588
