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Proceedings Paper

Comparison of a new dye with Erythrosin B in an AA/PVA based photopolymer material utilising the NPDD model
Author(s): Yue Qi; Haoyu Li; Jean Pieere Fouassier; Jacques Lalevée; John T. Sheridan
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Paper Abstract

Dyes often act as the photoinitiator PI/photosensitizer PS in photopolymer materials and are therefore of significant interest. The properties of the PI/PS used strongly influences grating formation when the material layer is exposed holographically. In this paper, the ability of a recently synthesized dye, D_1, to sensitise an acrylamide/polyvinyl alcohol (AA/PVA) based photopolymer is examined and the material performance is characterised using an extended Non-local Photopolymerization Driven Diffusion (NPDD) model. Electron Spin Resonance Spin Trapping experiments (ESR-ST) are also carried out to characterize the generation of the initiator/primary radical, R•, during exposure. The results obtained are then compared to those for the corresponding situation when using a Xanthene dye, i.e., Erythrosin B (EB), under the same experiment conditions. The results indicate that the non-local effect is greater when this new photosensitizer is used in the material. Analysis indicates that this is the case because of the dyes (D_1) weak absorptivity and the resulting slow rate of primary radical production.

Paper Details

Date Published:
Proc. SPIE 9131, Optical Modelling and Design III, 913117; doi: 10.1117/12.2052174
Show Author Affiliations
Yue Qi, Univ. College Dublin (Ireland)
Haoyu Li, Univ. College Dublin (Ireland)
Jean Pieere Fouassier, Univ. de Haute Alsace (France)
Jacques Lalevée, IS2M – LRC CNRS, Univ. de Haute Alsace (France)
John T. Sheridan, Univ. College Dublin (Ireland)

Published in SPIE Proceedings Vol. 9131:
Optical Modelling and Design III
Frank Wyrowski; John T. Sheridan; Jani Tervo; Youri Meuret, Editor(s)

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