Physical properties of volume holographic recording utilizing photo-initiated polymerization for nonvolatile digital data storage

Loukas Paraschis; Yasuyuki Sugiyama; Lambertus Hesselink

doi:10.1117/12.370219

22 November 1999 Physical properties of volume holographic recording utilizing photo-initiated polymerization for nonvolatile digital data storage

Loukas Paraschis, Yasuyuki Sugiyama, Lambertus Hesselink

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Proceedings Volume 3802, Advanced Optical Data Storage: Materials, Systems, and Interfaces to Computers; (1999) https://doi.org/10.1117/12.370219
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

Abstract

The physical properties of photopolymer grating formation are, for the first time, investigated elaborately with respect to I, and (Lambda) . The dynamics of holographic recording with constant exposure energy (15mJ/cm²), are evaluated for a wide range of different I (mW/cm² - W/cm²), and for a few typical (Lambda) (0.5 - 3.5 micrometer), in a material utilizing cationing-ring-opening polymerization (Polaroid CROP ULSH-500B). Diffusion was evaluated to limit the photo- initiated recording sensitivity at high I(greater than W/cm² approximately (Lambda) ^-2). At the same time, however, the significant post-exposure grating development observed for diffusion limited recordings, was identified to allow eventually for equally high sensitive final gratings (approximately 3 - 5 cm/mJ) without reciprocity, or diffusion limitations. Based on these observations, a new physical model was developed that describes more accurately holographic recording utilizing photo-initiated polymerization, and accounts successfully for the observed physical properties of grating formation.

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Loukas Paraschis, Yasuyuki Sugiyama, and Lambertus Hesselink "Physical properties of volume holographic recording utilizing photo-initiated polymerization for nonvolatile digital data storage", Proc. SPIE 3802, Advanced Optical Data Storage: Materials, Systems, and Interfaces to Computers, (22 November 1999); https://doi.org/10.1117/12.370219

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