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Proceedings Paper

Dynamic characteristics using dark reaction in photopolymer
Author(s): Nam Kim; Eun-Seok Kim; Yoon-Sun Choi; Young-Rae Cho; Sang Hyun Kim; J. U. Eum; R. S. Kim
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Paper Abstract

The diffraction efficiencies of DuPont's photopolymer OmniDexR 706 holographic recording material are measured for exposures, incident angles, diffusion-time delays and exposure times. As attaching the material on a glass or plastic plate, unwanted secondary gratings are induced, which make the diffraction efficiencies much lower than expected. In order to eliminate this phenomenon, we change the incident angle between the object beam and the reference beam. Since the polymerization and the photospeed of photopolymers are 1000 times slower than silver halide materials, holograms can be influenced with many kinds of parameter. It was examined the static characteristics and the dynamic characteristics that are related with an exposure time and a diffusion-time delay using the dark reaction of monomer in polymerization. Applying the dynamic characteristics, the diffraction efficiencies of this material were stabilized. As a result, the best condition is achieved when the total input power is 8 mW [exposure energy is 200 (mJ/cm2) in our experiment] and the diffusion-time delay is from one to three minute.

Paper Details

Date Published: 23 March 1999
PDF: 7 pages
Proc. SPIE 3638, Holographic Materials V, (23 March 1999); doi: 10.1117/12.342805
Show Author Affiliations
Nam Kim, Chungbuk National Univ. (South Korea)
Eun-Seok Kim, Chungbuk National Univ. (South Korea)
Yoon-Sun Choi, Chungbuk National Univ. (South Korea)
Young-Rae Cho, Chungbuk National Univ. (South Korea)
Sang Hyun Kim, Korea Telecom Co. (South Korea)
J. U. Eum, Korea Telecom Co. (South Korea)
R. S. Kim, Korea Telecom Co. (South Korea)

Published in SPIE Proceedings Vol. 3638:
Holographic Materials V
T. John Trout, Editor(s)

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