Open AccessSub-millisecond switching of multi-level liquid crystal on silicon spatial light modulators for increased information bandwidth
Author(s) -
Mike Pivnenko,
Kun Li,
Daping Chu
Publication year - 2021
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.429992
Subject(s) - liquid crystal on silicon , millisecond , optics , bandwidth (computing) , diffraction efficiency , frame rate , spatial light modulator , materials science , diffraction , contrast ratio , phase modulation , liquid crystal , refresh rate , spatial frequency , silicon , modulation (music) , optoelectronics , computer science , physics , telecommunications , computer hardware , phase noise , astronomy , acoustics
Sub-millisecond response time with a refresh rate higher than 2000 frames per second (fps) and no degradation of the contrast ratio or diffraction efficiency is demonstrated in working liquid crystal on silicon (LCOS) spatial light modulators (SLMs) with 8-bit grey levels of amplitude and phase modulations. This makes possible to achieve an information bandwidth of about 190 Gb s -1 with a 4k LCOS operating at 10-bit phase modulation levels. The normalised contrast stays at almost the unit level for a frame rate up to 1700 fps and at higher than 0.9 for 2500 fps. The diffraction efficiency stays above -1.0 dB for a frame rate up to 2400 fps. Such a fast response allows us to eliminate image blurring in replaying a fast movie.