Plasmonic all-optical bistable device based on nematic liquid crystal

Low-power all-optical bistable liquid crystal (LC) devices are reported in which surface plasmons propagate along a metallic grating. The threshold switching illumination was 1.4 mW/mm 2 in the device with the twisted-nematic LC cell. This is a lower value than for all-optical bistable devices repor...

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Bibliographic Details
Published in:Optics communications 2011-06, Vol.284 (13), p.3445-3448
Main Authors: Oishi, Kenta, Kajikawa, Kotaro
Format: Article
Language:English
Subjects:
Bistability
Devices
Diffraction gratings
Grating
Gratings (spectra)
Illumination
Liquid crystal
Liquid crystals
Optical bistability
Plasmonics
Plasmons
Surface plasmon
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Summary:Low-power all-optical bistable liquid crystal (LC) devices are reported in which surface plasmons propagate along a metallic grating. The threshold switching illumination was 1.4 mW/mm 2 in the device with the twisted-nematic LC cell. This is a lower value than for all-optical bistable devices reported previously. This low-power bistability device can be used in two-dimensional optical memories or spatial light modulators. ► Low-power all-optical bistable liquid crystal devices based on surface plasmons. ► The surface plasmon propagates along metallic grating. ► The threshold switching illumination was 1.4 mW/mm2.
ISSN:0030-4018
1873-0310
DOI:10.1016/j.optcom.2011.03.057