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Proceedings Paper

Optical storage in photopolymers using 3D microgratings
Author(s): Susanna Orlic; Christian Mueller; Ruediger Schoen; Martin Trefzer; Hans Joachim Eichler
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Paper Abstract

An optical system for writing and reading of microscopic holographic gratings in a photopolymer layer is presented. The reflection gratings created by a highly focused laser beam can be used to replace the pit-land structure in a disk-based optical storage system. The modulation range of such three-dimensional microgratings is clearly localized to the focal region of a focused write beam. Holographic recording allows for using various multiplexing methods. To achieve storage densities higher than currently available, we propose a combination of wavelength multiplexing and multilayer storage. The fist steps in the system development as well as microholographic recording in Aprilis CROP photopolymers are reported.

Paper Details

Date Published: 23 January 2002
PDF: 11 pages
Proc. SPIE 4459, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications VII, and Optical Data Storage, (23 January 2002); doi: 10.1117/12.454037
Show Author Affiliations
Susanna Orlic, Technische Univ. Berlin (Germany)
Christian Mueller, Technische Univ. Berlin (Germany)
Ruediger Schoen, Technische Univ. Berlin (Germany)
Martin Trefzer, Technische Univ. Berlin (Germany)
Hans Joachim Eichler, Technische Univ. Berlin (Germany)


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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