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

Ribun Onodera; Yukihiro Ishii

doi:10.1117/12.465752

20 September 2002 Laser-diode phase-shifting interferometer with a high-speed camera

Ribun Onodera, Yukihiro Ishii

Proceedings Volume 4919, Advanced Materials and Devices for Sensing and Imaging; (2002) https://doi.org/10.1117/12.465752
Event: Photonics Asia, 2002, Shanghai, China

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.

Citation Download Citation

Ribun Onodera and Yukihiro Ishii "Laser-diode phase-shifting interferometer with a high-speed camera", Proc. SPIE 4919, Advanced Materials and Devices for Sensing and Imaging, (20 September 2002); https://doi.org/10.1117/12.465752

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