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Proceedings Paper

Laser-diode phase-shifting interferometer with a high-speed camera
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Paper Abstract

We have developed a laser-diode (LD) phase-shifting interferometer that can capture frame-rate phase-shifted interferograms on a video tape in the previous paper. The injection-current variation of LD was synchronized with the field pulse of a CCD camera to produce π/2-step phase shifts in a four-step manner. The four successive phase-shifted interferograms were used to calculate a distribution of frozen phase by a phase-extraction algorithm. In this paper we propose a LD phase-shifting interferometer with a high-speed camera that can record sequences of images from 60 to 8000 frames per second. It permits us to measure a much faster phenomena.

Paper Details

Date Published: 20 September 2002
PDF: 8 pages
Proc. SPIE 4919, Advanced Materials and Devices for Sensing and Imaging, (20 September 2002); doi: 10.1117/12.465752
Show Author Affiliations
Ribun Onodera, Univ. of Industrial Technology (Japan)
Yukihiro Ishii, Univ. of Industrial Technology (Japan)


Published in SPIE Proceedings Vol. 4919:
Advanced Materials and Devices for Sensing and Imaging
Jianquan Yao; Yukihiro Ishii, Editor(s)

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