CROP holographic storage media for optical data storage greater than 100 bits/um<sup>2</sup>

David A. Waldman; Christopher J. Butler; Daniel Henri Raguin

doi:10.1117/12.513614

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8 December 2003 CROP holographic storage media for optical data storage greater than 100 bits/μm²

David A. Waldman, Christopher J. Butler, Daniel Henri Raguin

Proceedings Volume 5216, Organic Holographic Materials and Applications; (2003) https://doi.org/10.1117/12.513614
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

Abstract

Aprilis HMD-050-G-C-400 photopolymerizable holographic recording material for card and disk media, based upon cationic ring-opening polymerization (CROP), has been further optimized for recording in an increased film thickness of 400 µm. A storage density, S_2D, of 150 bits/μm² for digital data recorded holographically as pages and a dynamic range of at least M/# = 22 have been achieved, which are substantially greater than previously reported for photopolymerizable media, while concurrently the inherent low shrinkage, high image fidelity and high sensitivity characteristics of the material have been retained. Dynamic range or cumulative grating strength, Ση_i0.5, has been determined from co-locationally recorded peristrophic and planar-angle multiplexed 262 kbit data pages that exhibit low raw bit-error-rates (BER) having an average value of 1E-3 and 5.5E-3 for ~100 and ~150 bits/μm², respectively. Good Bragg selectivity consistent with the imaged thickness and sinc² function behavior is observed for the multiplexed digital data page holograms, and both the Bragg selectivity and the diffraction efficiency are stable without the need for post-imaging fixing procedures. Sensitivity during recording of digital data page holograms is in the range of 6.75 cm/mJ diminshing to 0.5 cm/mJ for 87% of the cumulative grating strength that is attained during co-locational recording.

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David A. Waldman, Christopher J. Butler, and Daniel Henri Raguin "CROP holographic storage media for optical data storage greater than 100 bits/μm²", Proc. SPIE 5216, Organic Holographic Materials and Applications, (8 December 2003); https://doi.org/10.1117/12.513614

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