Open AccessElectrically modulated transparent liquid crystal -optical grating projection
Author(s) -
Thomas Buß,
Cameron L. C. Smith,
Anders Kristensen
Publication year - 2013
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.001820
Subject(s) - optics , grating , materials science , liquid crystal , projection (relational algebra) , liquid crystal on silicon , optoelectronics , wavelength , diffraction grating , photonic crystal , physics , computer science , algorithm
A transparent, fully integrated electrically modulated projection technique is presented based on light guiding through a thin liquid crystal layer covering sub-wavelength gratings. The reported device operates at 10 V with response times of 4.5 ms. Analysis of the liquid crystal alignment shows that director-reorientation occurs over timescales on the order of 90 µs close to the grating surface. The technology is suitable for next generation heads-up-displays and reconfigurable multilayer photonic integrated circuits.