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Proceedings Paper

Comparison of a new photosensitizer with Erythrosin B for use in a photopolymer
Author(s): Yue Qi; Haoyu Li; Jean Pierre 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: 8 May 2015
PDF: 15 pages
Proc. SPIE 9508, Holography: Advances and Modern Trends IV, 95080I (8 May 2015); doi: 10.1117/12.2179433
Show Author Affiliations
Yue Qi, Univ. College Dublin (Ireland)
Haoyu Li, Univ. College Dublin (Ireland)
Jean Pierre Fouassier, Univ. de Haute Alsace (France)
Jacques Lalevée, Institut de Science des Matériaux, CNRS, Univ. de Haute Alsace (France)
John T. Sheridan, Univ. College Dublin (Ireland)


Published in SPIE Proceedings Vol. 9508:
Holography: Advances and Modern Trends IV
Miroslav Hrabovský; John T. Sheridan; Antonio Fimia, Editor(s)

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