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Proceedings Paper

Dynamic holographic interferometry using a BI12SiO20 photorefractive crystal and mono-mode optical fibres
Author(s): Jason Potter; Ronald C. Spooncer; Peter R. Hobson
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Paper Abstract

Dynamic holographic interferometry using polarization preserving optical fibers as light guides and incorporating a photorefractive Bi12SiO20 (BSO) crystal as the recording medium is described. An experimental investigation of the recording of time average holograms through the diffusion process (employing anisotropic self-diffraction) and the drift process (application of dc and ac electric fields across the crystal) is also described. The holographic interferometer was optimized to produce holograms with a high diffraction efficiency and a high signal-to-noise ratio. Results are presented on optimizing parameters such as the writing beam angle and writing beam intensity ratio. The advantages that can be gained by deploying this holographic interferometer in an industrial environment, where the laser light is guided to the location of the object by means of monomode fibers and images are stored within a photorefractive crystal is described. The holographic interferometer is capable of producing time average and double exposure interferograms of vibrating and deformed objects which can be displayed in real time.

Paper Details

Date Published: 2 March 1993
PDF: 11 pages
Proc. SPIE 1732, Holographics International '92, (2 March 1993); doi: 10.1117/12.140433
Show Author Affiliations
Jason Potter, Brunel Univ. (United Kingdom)
Ronald C. Spooncer, Brunel Univ. (United Kingdom)
Peter R. Hobson, Brunel Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 1732:
Holographics International '92
Yuri N. Denisyuk; Frank Wyrowski, Editor(s)

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