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Proceedings Paper

Novel photorefractive sensing device for laser surface inspection
Author(s): Akira Shiratori; Minoru Obara
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Paper Abstract

We have developed a novel photorefractive sensing device using the hologram storage characteristic of a photorefractive barium titanate crystal. This device is capable of observing surface structures of precisely machined work, and we demonstrated surface sensing and inspection using samples. The angular resolution of this device depended on the angular aperture of the Bragg diffraction of the gratings inside the crystal, and resolution as high as submilliradian is expected.

Paper Details

Date Published: 8 April 1996
PDF: 6 pages
Proc. SPIE 2703, Lasers as Tools for Manufacturing of Durable Goods and Microelectronics, (8 April 1996); doi: 10.1117/12.237730
Show Author Affiliations
Akira Shiratori, Keio Univ. (Japan)
Minoru Obara, Keio Univ. (Japan)


Published in SPIE Proceedings Vol. 2703:
Lasers as Tools for Manufacturing of Durable Goods and Microelectronics
Jan J. Dubowski; Jyotirmoy Mazumder; Leonard R. Migliore; Chandrasekhar Roychoudhuri; Ronald D. Schaeffer, Editor(s)

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