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AC Field Enhancement of Diffraction From Permanent Gratings in Dye-Doped Liquid Crystals

AC Field Enhancement of Diffraction From Permanent Gratings in Dye-Doped Liquid Crystals
AC Field Enhancement of Diffraction From Permanent Gratings in Dye-Doped Liquid Crystals
Permanent gratings can be written in doped liquid crystals with high dye concentration without any externally applied electric field, using low intensity, visible light. The gratings are adaptive as their diffraction efficiency ed intensity can be easily modulated and controlled enhanced by AC field. The diffracted intensity could also be modulated by low frequency electric field with the magnitude of modulation decreasing for higher frequencies. The permanent gratings are durable, remaining in the cells for over a year and after application of high temperatures. There is some hysteresis in diffraction efficiency response to magnitude and sign of applied AC field.
353-357
Kaczmarek, M.
408ec59b-8dba-41c1-89d0-af846d1bf327
Cudney, R.S.
44f6a973-4931-4657-a759-a5b4414f1451
Sambles, J.R.
9e16fcea-8040-496e-82b5-8d9bbdeed48a
Kaczmarek, M.
408ec59b-8dba-41c1-89d0-af846d1bf327
Cudney, R.S.
44f6a973-4931-4657-a759-a5b4414f1451
Sambles, J.R.
9e16fcea-8040-496e-82b5-8d9bbdeed48a

Kaczmarek, M., Cudney, R.S. and Sambles, J.R. (2004) AC Field Enhancement of Diffraction From Permanent Gratings in Dye-Doped Liquid Crystals. Ukrainian Journal of Applied Physics, 49, 353-357.

Record type: Article

Abstract

Permanent gratings can be written in doped liquid crystals with high dye concentration without any externally applied electric field, using low intensity, visible light. The gratings are adaptive as their diffraction efficiency ed intensity can be easily modulated and controlled enhanced by AC field. The diffracted intensity could also be modulated by low frequency electric field with the magnitude of modulation decreasing for higher frequencies. The permanent gratings are durable, remaining in the cells for over a year and after application of high temperatures. There is some hysteresis in diffraction efficiency response to magnitude and sign of applied AC field.

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Published date: 2004

Identifiers

Local EPrints ID: 15127
URI: https://eprints.soton.ac.uk/id/eprint/15127
PURE UUID: 38ba4edc-f528-41b7-b914-399ad71db8da

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Date deposited: 17 Mar 2005
Last modified: 17 Jul 2017 16:51

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