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Photorefractive gratings in liquid crystals with polymer doped C60 layers

Photorefractive gratings in liquid crystals with polymer doped C60 layers
Photorefractive gratings in liquid crystals with polymer doped C60 layers
Photorefractive-like liquid crystals [1], with their large diffraction efficiencies and nonlinear effects combined with thin film format, are ideal materials for integrated optics applications. Liquid crystals doped with dyes or with added photoconducting polymer layers' show high two-beam coupling gain.

The reorientation process that liquid crystal molecules undergo is induced and controlled by the application of light and electric field. There is typically more than one mechanism involved in the reorientation of liquid crystal molecules and, with careful design, the photorefractive space-charge field can play an important role. Moreover, the reorientation can also be strongly influenced by surface-mediated effects and surface-charge modulation, as well as surface anchoring.

Photorefractive liquid crystals structures with photoconductive layers on their substrates have shown to be very efficient, in particular using polyvinyl carbazole (PVK) polymer doped with photosensitiser trinitrofluorene (TNF). However, the practical application of this structure is minimised by the toxic nature of the TNF dopant.
Kaczmarek, Malgosia
408ec59b-8dba-41c1-89d0-af846d1bf327
Eason, Robert W.
e38684c3-d18c-41b9-a4aa-def67283b020
Dyadyusha, Andriy
daa939a8-2860-4a31-ab12-7950bf59aeef
Kaczmarek, Malgosia
408ec59b-8dba-41c1-89d0-af846d1bf327
Eason, Robert W.
e38684c3-d18c-41b9-a4aa-def67283b020
Dyadyusha, Andriy
daa939a8-2860-4a31-ab12-7950bf59aeef

Kaczmarek, Malgosia, Eason, Robert W. and Dyadyusha, Andriy (2003) Photorefractive gratings in liquid crystals with polymer doped C60 layers. Conference on Lasers and Electro-Optics/Europe (CLEO/Europe-EQEC 2003), Munich, Germany. 22 - 26 Jun 2003. 1 pp . (doi:10.1109/CLEOE.2003.1312349).

Record type: Conference or Workshop Item (Paper)

Abstract

Photorefractive-like liquid crystals [1], with their large diffraction efficiencies and nonlinear effects combined with thin film format, are ideal materials for integrated optics applications. Liquid crystals doped with dyes or with added photoconducting polymer layers' show high two-beam coupling gain.

The reorientation process that liquid crystal molecules undergo is induced and controlled by the application of light and electric field. There is typically more than one mechanism involved in the reorientation of liquid crystal molecules and, with careful design, the photorefractive space-charge field can play an important role. Moreover, the reorientation can also be strongly influenced by surface-mediated effects and surface-charge modulation, as well as surface anchoring.

Photorefractive liquid crystals structures with photoconductive layers on their substrates have shown to be very efficient, in particular using polyvinyl carbazole (PVK) polymer doped with photosensitiser trinitrofluorene (TNF). However, the practical application of this structure is minimised by the toxic nature of the TNF dopant.

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More information

Published date: 2003
Additional Information: CF1-4-TUE
Venue - Dates: Conference on Lasers and Electro-Optics/Europe (CLEO/Europe-EQEC 2003), Munich, Germany, 2003-06-22 - 2003-06-26
Organisations: Quantum, Light & Matter Group

Identifiers

Local EPrints ID: 41666
URI: http://eprints.soton.ac.uk/id/eprint/41666
PURE UUID: 52e38a32-b4ad-495f-b27a-4a6e93abf56b
ORCID for Robert W. Eason: ORCID iD orcid.org/0000-0001-9704-2204

Catalogue record

Date deposited: 12 Oct 2006
Last modified: 18 Feb 2021 16:36

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Author: Robert W. Eason ORCID iD
Author: Andriy Dyadyusha

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