Abstract
This article describes an approach toward improving the characteristics of a photopolymer for holographic data storage application. The maximum diffraction efficiency (η max) and dynamic range (M#) of 9,10- phenanthrenequinone (PQ)-doped poly(methyl methacrylate; PMMA) both improved significantly after co-doping with one of three nitroanilines-N,N-dimethyl-4- nitroaniline (DMNA), N-methyl-4-nitroaniline (MNA), and 4-nitroaniline (pNA). In particular, the value of η max increased from 38% for the PMMA/PQ system to 72% for the PMMA/PQ/DMNA system (a 1.89-fold improvement) and the value of M# increased accordingly from 2.7 to 7.3 (a 2.70-fold improvement). Thus, the holographic data storage characteristics of PMMA/PQ photopolymers can be improved through co-doping with nitroaniline compounds. We also investigated the mechanism of the nitroaniline-induced improvement in optical storage performance using proton nuclear magnetic resonance and X-ray photoelectron spectroscopy.
Original language | English |
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Pages (from-to) | 643-650 |
Number of pages | 8 |
Journal | Journal of Applied Polymer Science |
Volume | 127 |
Issue number | 1 |
DOIs | |
State | Published - 5 Jan 2013 |
Keywords
- birefringence
- nitroaniline
- phenanthrenequinone
- photopolymer
- poly(methyl methacrylate)
- volume holographic recording