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Engineered pixels using active plasmonic holograms with liquid crystals


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Authors

Montelongo, Y 
Tenorio-Pearl, JO 
Cabrero-Vilatela, A 

Abstract

Digital holography requires arrays of small reconfigurable elements to achieve complex reconstruction of the hologram with common systems based on pixels utilizing liquid crystal on silicon (LCoS) technology. The backplane of a typical pixel element is potentially underutilized and thus relatively large physical areas exist in which information can be stored and exploited to give additional functionality to pixel elements. Polarisation and wavelength dependent optical properties can be achieved in small areas using the plasmonic effects of optical antennae. The integration of LCs with optical antennae-based plasmonic holograms allows active modulation of the far field pattern. The work here demonstrates the concept that conventional LCoS pixel elements can be greatly enhanced with the integration of plasmonic holograms, composed of optical antennae patterned on the surface, giving rise to new levels of modulation capability for holographic pixel elements. Using LCs, polarisation dependent effects in plasmonic holograms can be switched. ‘Engineered pixels’, with sub-wavelength multiplexing over both polarisation and wavelength, can increase the channel capacity of a typical LC display device.

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Keywords

Holography, Liquid crystals, Optical antennas, Pixels, Plasmonics

Journal Title

Physica Status Solidi - Rapid Research Letters

Conference Name

Journal ISSN

1862-6254
1862-6270

Volume Title

9

Publisher

Wiley-VCH Verlag
Sponsorship
Engineering and Physical Sciences Research Council (EP/M016218/1)
EPSRC (1241027)
Engineering and Physical Sciences Research Council (EP/K016636/1)
Engineering and Physical Sciences Research Council (EP/I033491/1)
CW would like to thank the EPSRC Integrated Photonic and Electronic Systems (IPES) Centre for Doctoral Training for their financial support. Y.M., J.O.T.-P, A.C.-V received financial sup-port from the Cambridge Overseas Trust and the Mexican National Council on Science and Technology.