By Topic

Electro-optical switching of volume holographic gratings recorded in polymer dispersed liquid crystals

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

5 Author(s)

In this paper, we describe a novel liquid crystal-polymer composite material system which allows fast, single-step recording of volume holograms with diffraction efficiency approaching 100% and narrow angular selectivity. The diffraction efficiencies (DE) are controllable by applied electric fields. We have achieved complete switching of a first-order Bragg diffracted beam into the zero-order with an applied field of ~8 V/μm and 50-100 microsecond response time. Addition of a surfactant octanoic acid lowered the switching voltage to ~5 V/μm. We also recorded reflection gratings in this material system. We have demonstrated image storage and electro-optical readout with these materials. Low voltage, high resolution scanning electron microscopy studies have confirmed that gratings formed in this material system consist of periodic polymer-dispersed liquid crystal planes

Published in:

Aerospace and Electronics Conference, 1996. NAECON 1996., Proceedings of the IEEE 1996 National  (Volume:2 )

Date of Conference:

20-23 May 1996