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Proceedings Paper

Blue-sensitized nanoparticle-(thiol-ene) polymer composites for volume holographic recording
Author(s): Jun-ichiro Takahashi; Masaru Kawana; Yasuo Tomita
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Paper Abstract

We describe an experimental investigation of volume holographic recording in photopolymerizable thiol-ene based nanoparticle-polymer composites (NPCs) at a wavelength of 404 nm. We introduce a new photoinitiator, Irgacure819, for efficient volume holographic recording in the blue-violet spectral region and measure the photopolymerization dynamics and the holographic recording properties at its varying concentrations. It is found that doping of 0.1 wt.% Irgacure 819 provides the saturated refractive index modulation amplitude as large as 9.5×10−3 and the material recording sensitiviey as high as 1800 cm/J. These measured values are much larger than the minimum required values for holographic data storage media. It is also shown that the out-of-plane shrinkage can be suppressed more with decreasing the photoinitiator concentration. We compare these results with another blue sensitizer, Darocur TPO, to evaluate the performance of Irgacure 819.

Paper Details

Date Published: 27 April 2016
PDF: 8 pages
Proc. SPIE 9889, Optical Modelling and Design IV, 988913 (27 April 2016); doi: 10.1117/12.2225061
Show Author Affiliations
Jun-ichiro Takahashi, The Univ. of Electro-Communications (Japan)
Masaru Kawana, The Univ. of Electro-Communications (Japan)
Yasuo Tomita, The Univ. of Electro-Communications (Japan)

Published in SPIE Proceedings Vol. 9889:
Optical Modelling and Design IV
Frank Wyrowski; John T. Sheridan; Youri Meuret, Editor(s)

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