Open AccessPhase-only modulation with a twisted nematic liquid crystal display by means of equi-azimuth polarization states
Author(s) -
Vicente Durán,
Jesús Láncis,
Enrique Tajahuerce,
Mercedes FernándezAlonso
Publication year - 2006
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.14.005607
Subject(s) - liquid crystal , polarizer , optics , azimuth , phase modulation , polarization (electrochemistry) , materials science , liquid crystal display , phase (matter) , modulation (music) , contrast ratio , physics , birefringence , phase noise , chemistry , acoustics , quantum mechanics
The capability of a twisted nematic liquid crystal display to generate a set of equi-azimuth polarization states is used to achieve a phase-only modulation regime. For this purpose, a liquid crystal display followed by a quarter-wave plate is launched between two polarizers. Theoretical support is provided by means of the Jones matrix calculus and the Poincaré sphere representation. Laboratory results for a commercial liquid crystal display are presented. A phase modulation deep of 270 masculine is obtained at 514 nm with a residual intensity variation which is lower than 2.5 %.