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Proceedings Paper

Two-layer structure for high spatial frequency optical data recording based on multinary chalcogenide semiconductors
Author(s): Vasile K. Rotaru; Stephan V. Robu; Igor V. Ciapurin; Galina Dragalina; Oleg Ya Korshak; I. Aboudih; Christophe Lafond; Roger A. Lessard
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Paper Abstract

We report a photosensitive composite structure consisting of chalcogenide glassy semiconductors and copolymeric thermoplastic materials. Our researches were aimed to find out new approaches of using photothermoplastic materials. (PTPM) as two-layered media for holographic and optical data recording. This approach was based on creating the modified PTPM structures with enhanced characteristics as well as on performing the new processes of recording onto PTPM. Some modifications in the recording procedure and equipment setup were carried out. It is established that PTPM systems based on donor-acceptor layers have a photosensitivity of 10-3 to 10-4 J/cm2. The introduction into them an additive of photochromic dye increases the photosensitivity of donor-acceptor systems by 2 - 3 times. The essential growth in photosensitivity is observed in the blue-to-green range of spectrum. A method of photothermoplastic recording of holograms on a PTPM with a photosensitive layer of chalcogenide glassy semiconductors is proposed. Storing the whole data file of holograms followed by their development does the recording of optical information.

Paper Details

Date Published: 23 January 2002
PDF: 7 pages
Proc. SPIE 4459, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications VII, and Optical Data Storage, (23 January 2002); doi: 10.1117/12.454031
Show Author Affiliations
Vasile K. Rotaru, State Univ. of Moldova (Moldova)
Stephan V. Robu, State Univ. of Moldova (Moldova)
Igor V. Ciapurin, State Univ. of Moldova (United States)
Galina Dragalina, State Univ. of Moldova (Moldova)
Oleg Ya Korshak, State Univ. of Moldova (Moldova)
I. Aboudih, Univ. Laval (Canada)
Christophe Lafond, Univ. Laval (Canada)
Roger A. Lessard, Univ. Laval (Canada)

Published in SPIE Proceedings Vol. 4459:
Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications VII, and Optical Data Storage
Shizhuo Yin; Francis T. S. Yu; Hans J. Coufal; Hans J. Coufal, Editor(s)

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