Abstract

The radiation-hardened characteristics of holographic polymer-dispersed liquid crystal (HPDLC) memory are discussed in the application for an optically reconfigurable gate array. The radiation experiments are conducted using a cobalt 60 gamma radiation source to examine the tolerance of a 100 Mrad total ionizing dose for the HPDLC memory. The optical properties are compared in the conditions before and after gamma-ray irradiation for the fabricated HPDLC gratings. The effects of gamma-ray irradiation on the internal grating structure are also investigated by polarization optical microscopy and scanning electron microscopy observations. The HPDLC memory irradiated by a 100 Mrad total ionizing dose demonstrates the implementation of the optical reconfiguration in a gate-array VLSI.

© 2017 Optical Society of America

Effects of a radiation dose in gamma-ray irradiation fields on holographic gratings formed by liquid crystal composites

Akifumi Ogiwara, Makishi Toda, Junya Ishido, Minoru Watanabe, and Hiroshi Kakiuchida
OSA Continuum 4(2) 514-528 (2021)

Optical reconfiguration by anisotropic diffraction in holographic polymer-dispersed liquid crystal memory

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Formation of holographic polymer-dispersed liquid crystal memory by angle-multiplexing recording for optically reconfigurable gate arrays

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Temperature dependence of anisotropic diffraction in holographic polymer-dispersed liquid crystal memory

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Appl. Opt. 52(26) 6529-6536 (2013)

Holographic polymer-dispersed liquid crystal memory for optically reconfigurable gate array using subwavelength grating mask

Akifumi Ogiwara, Minoru Watanabe, Takayuki Mabuchi, and Fuminori Kobayashi
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