Read/write demonstrator of rewritable holographic memory card system

Emoeke Loerincz; Ferenc Ujhelyi; Pal Koppa; A. Kerekes; Gabor Szarvas; Gabor Erdei; Jozsua Fodor; Sz. Mike; Attila Sueto; Peter Varhegyi; P. S. Ramanujam; Soeren Hvilsted

doi:10.1117/12.453409

10 January 2002 Read/write demonstrator of rewritable holographic memory card system

Emoeke Loerincz, Ferenc Ujhelyi, Pal Koppa, A. Kerekes, Gabor Szarvas, Gabor Erdei, Jozsua Fodor, Sz. Mike, Attila Sueto, Peter Varhegyi, P. S. Ramanujam, Soeren Hvilsted

Author Affiliations +

Proceedings Volume 4342, Optical Data Storage 2001; (2002) https://doi.org/10.1117/12.453409
Event: Optical Data Storage, 2001, Santa Fe, NM, United States

Abstract

We present the improved demonstrator of our rewritable holographic memory card system. High density optical storage is realized in a non-commercial optical set-up. Fourier transformed recording is used in a polarization holographic arrangement realizing reading and writing from the same side of the data carrier which is a modified plastic card. Holograms containing binary information of 300 x 220 bits are as small as 0.0484 square mm. The storage layer is amorphous polyester providing repeated writing and erasure cycles and thousandfold readouts without loss of information. Alternate read only system providing non-volatile storage can be realized using 635 nm laser diode.

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Emoeke Loerincz, Ferenc Ujhelyi, Pal Koppa, A. Kerekes, Gabor Szarvas, Gabor Erdei, Jozsua Fodor, Sz. Mike, Attila Sueto, Peter Varhegyi, P. S. Ramanujam, and Soeren Hvilsted "Read/write demonstrator of rewritable holographic memory card system", Proc. SPIE 4342, Optical Data Storage 2001, (10 January 2002); https://doi.org/10.1117/12.453409

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