30 to 50 ns liquid-crystal optical switches
Name
Geis-2010-30 to 50 ns liquid.pdf
Size
1.76 MB
Format
Adobe PDF
Checksum (MD5)
6aaf1e9c470891f22bd7ca943f4287ac
Author(s)
Osgood, Richard M.
Kimball, B. R.
Geis, Michael W.
Turner, George W.
Lyszczarz, Theodore M.
Molnar, Richard J.
Date Issued
February 2010
Journal
Proceedings of SPIE--the International Society for Optical Engineering; v.7618
Publisher
SPIE
Citation
M. W. Geis, R. J. Molnar, G. W. Turner, T. M. Lyszczarz, R. M. Osgood, and B. R. Kimball (2010). 30 to 50 ns liquid-crystal optical switches. Proc. SPIE 7618: 76180J/1-5.
©2010 COPYRIGHT SPIE--The International Society for Optical Engineering
Version
Final published version
Abstract
The optical switching times of liquid-crystal cells using 5CB, 5OCB and PCH5 liquid crystal materials have been characterized as a function of applied voltage, V, and temperature, T. The transition time from 90 to 10 % transmission scales as V-2 and is limited to 50 to 30 ns by the breakdown electric field, ~ 106 V cm-1 of the liquid crystal. The time from the initial voltage step to 90 % transmission, delay time, decreases with increasing voltage and approaches a constant value at higher electric fields, >105 V cm-1. Both the transition and delay times decrease with increasing temperature. The minimum transition times at temperatures a few degrees below the nematic-isotropic temperature are 32, 32, and 44 ns and delay times are 44, 25 and 8 ns for 5CB, 5OCB, and PCH5 respectively.
Subjects
liquid crystal
optical switches
MIT Department
Lincoln Laboratory
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1117/12.840281
