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5 March 2021 Field-induced reorientation of three-dimensional photonic structure based on blue phase liquid crystal for computer-generated holograms
SeongYong Cho, Hiroyuki Yoshida, Masanori Ozaki
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Proceedings Volume 11707, Emerging Liquid Crystal Technologies XVI; 117070C (2021) https://doi.org/10.1117/12.2584013
Event: SPIE OPTO, 2021, Online Only
Abstract
We present a facile method to control the three-dimensional (3D) orientation of blue phase (BP) liquid crystals. The field-induced intermediate phases, focal conic and BP X, from electrically unwound homeotropic state induce the [001] crystal axis to be aligned along the surface anchoring and the (110) crystal plane oriented parallel to the substrate, respectively. This method was used to fabricate a computer-generated hologram through Bragg-Berry (BB) phase that the phase of Bragg reflected light is modulated by controlling the azimuthal orientation of BPs. Furthermore, we theoretically and experimentally demonstrate that the BB hologram shows circular polarization selectivity for all angles of incidence, owing to the 3D helical structure of BPs.
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SeongYong Cho, Hiroyuki Yoshida, and Masanori Ozaki "Field-induced reorientation of three-dimensional photonic structure based on blue phase liquid crystal for computer-generated holograms", Proc. SPIE 11707, Emerging Liquid Crystal Technologies XVI, 117070C (5 March 2021); https://doi.org/10.1117/12.2584013
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KEYWORDS
Computer generated holography
Liquid crystals
Photonic crystals
Crystals
Holograms
Modulation
Polarization
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