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Proceedings Paper

Novel type of red-sensitive photopolymer system for optical storage
Author(s): Feng Zhao; Edward E. E. Frietman; Xiao Li
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Paper Abstract

In this paper, a novel type of red sensitive photo-polymer system for optical storage, here called RSPP, is presented. First of all, the components in RSPP, for example, photo- sensitizer, photo-initiator, monomer, copolymer, combiner, stabilizer, hardener, and fabrication and processing technique of RSPP are given. Then, the absorption spectrum of RSPP material is measured. And the result shows the material is only sensitive to read light, whose absorption peak is at 662 nm and half-width of the absorption is about 100 nm. After that, the property of exposure in RSPP is studied. It is found that RSPP holographic plate has several advantages over the optical storage (holographic optical storage) material previously reported. First, this RSPP is fit to record both transmission holograms and reflection holograms. Second, the holograms recorded in RSPP plate can be processed both in dry and in wet processes due to its strong real-time effect. The performance parameters of the ESPP are following: (1) The photosensitivity is about 2 mJ/cm2 at 630 nm; (2) The resolution of the material is more than 4000 pp/mm; (3) The saturation refractive index modulation is 0.0034 and 0.0141 for real time and wet processing respectively. In the study of the exposure in RSPP holographic plate, some other phenomena concerning real time effect in RSPP, such as, light- amplification and modulation of single light beam effect, are found. The mechanism of these phenomena is discussed.

Paper Details

Date Published: 5 November 1998
PDF: 5 pages
Proc. SPIE 3468, Advanced Optical Memories and Interfaces to Computer Storage, (5 November 1998); doi: 10.1117/12.330433
Show Author Affiliations
Feng Zhao, Harbin Institute of Technology (China)
Edward E. E. Frietman, Delft Univ. of Technology (Netherlands)
Xiao Li, Harbin Institute of Technology (China)

Published in SPIE Proceedings Vol. 3468:
Advanced Optical Memories and Interfaces to Computer Storage
Pericles A. Mitkas; Zameer U. Hasan, Editor(s)

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