Abstract

A holographic material based on a photopolymerizable nematic acrylate was improved by the addition of the trithiocarbonate, EtO₂CCH₂SC(S)SCH₂CO₂Et, increasing uniformity and reproducibility in the formation of electrically switchable holographic gratings. Diffraction efficiencies as high as $34\%$, the thin-grating theoretical maximum, were achieved at large $\left(10–14\mathrm{\mu m}\right)$ grating spacings. Improved diffraction efficiency was seen over a range of grating spacings $\left(0.35–10\mathrm{\mu m}\right)$. The exposure window for grating formation was increased by an order of magnitude, resulting in much improved reproducibility.

© 2006 Optical Society of America

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