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Intrinsic and photo-induced optical properties of photoaligning azo-based materials coupled with liquid crystal systems

Intrinsic and photo-induced optical properties of photoaligning azo-based materials coupled with liquid crystal systems
Intrinsic and photo-induced optical properties of photoaligning azo-based materials coupled with liquid crystal systems
Photoaligning azobenzene-based PAAD materials can show strong photoresponse without a surface relief pattern. We report an experimental investigation of PAADs optical properties, such as complex refractive indices and optically induced birefringence. Formation of photoinduced phase gratings in 20-50 nm, thin PAAD layers is demonstrated, with a strong dependence of diffraction on the probe beam polarization. The light induced diffraction in liquid crystal systems coupled with PAAD films is also studied. We demonstrate a stable and strong diffraction grating, which can be rewritten by illumination or switched off by reorienting the liquid crystals with a bias voltage.
Podoliak, Nina
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Mavrona, Eleni
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Mailis, Sakellaris
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Gill, Jordan, Ronald Ewan
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D'alessandro, Giampaolo
bad097e1-9506-4b6e-aa56-3e67a526e83b
Apostolopoulos, Vasileios
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Tabiryan, Nelson
dca398f3-ef0d-4cc2-885c-ffbdd45a8ee6
Kaczmarek, Malgosia
408ec59b-8dba-41c1-89d0-af846d1bf327
Podoliak, Nina
0908b951-00a7-48a5-bc82-631640910b9c
Mavrona, Eleni
bd9ffcf5-ba1f-4089-8846-eb550f63f425
Mailis, Sakellaris
233e0768-3f8d-430e-8fdf-92e6f4f6a0c4
Gill, Jordan, Ronald Ewan
308dc268-ffc7-411b-80ec-761e3c0e55bc
D'alessandro, Giampaolo
bad097e1-9506-4b6e-aa56-3e67a526e83b
Apostolopoulos, Vasileios
8a898740-4c71-4040-a577-9b9d70530b4d
Tabiryan, Nelson
dca398f3-ef0d-4cc2-885c-ffbdd45a8ee6
Kaczmarek, Malgosia
408ec59b-8dba-41c1-89d0-af846d1bf327

Podoliak, Nina, Mavrona, Eleni, Mailis, Sakellaris, Gill, Jordan, Ronald Ewan, D'alessandro, Giampaolo, Apostolopoulos, Vasileios, Tabiryan, Nelson and Kaczmarek, Malgosia (2017) Intrinsic and photo-induced optical properties of photoaligning azo-based materials coupled with liquid crystal systems. SPIE Optics + Photonics: Liquid Crystals XXI, San Diego, California, United States. 06 - 10 Aug 2017.

Record type: Conference or Workshop Item (Paper)

Abstract

Photoaligning azobenzene-based PAAD materials can show strong photoresponse without a surface relief pattern. We report an experimental investigation of PAADs optical properties, such as complex refractive indices and optically induced birefringence. Formation of photoinduced phase gratings in 20-50 nm, thin PAAD layers is demonstrated, with a strong dependence of diffraction on the probe beam polarization. The light induced diffraction in liquid crystal systems coupled with PAAD films is also studied. We demonstrate a stable and strong diffraction grating, which can be rewritten by illumination or switched off by reorienting the liquid crystals with a bias voltage.

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SPIE abstract_PAAD - Accepted Manuscript
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Published date: 7 August 2017
Venue - Dates: SPIE Optics + Photonics: Liquid Crystals XXI, San Diego, California, United States, 2017-08-06 - 2017-08-10

Identifiers

Local EPrints ID: 413798
URI: https://eprints.soton.ac.uk/id/eprint/413798
PURE UUID: 99ce0d5d-4393-4d44-9eca-dd52e612cdc3
ORCID for Nina Podoliak: ORCID iD orcid.org/0000-0002-3146-0355
ORCID for Sakellaris Mailis: ORCID iD orcid.org/0000-0001-8100-2670
ORCID for Giampaolo D'alessandro: ORCID iD orcid.org/0000-0001-9166-9356
ORCID for Vasileios Apostolopoulos: ORCID iD orcid.org/0000-0003-3733-2191

Catalogue record

Date deposited: 06 Sep 2017 16:31
Last modified: 18 May 2019 00:33

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Contributors

Author: Nina Podoliak ORCID iD
Author: Eleni Mavrona
Author: Jordan, Ronald Ewan Gill
Author: Vasileios Apostolopoulos ORCID iD
Author: Nelson Tabiryan

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