Abstract
Recently, amorphous organic photorefractive (PR) materials have attracted a lot of attention. However, since most of the high-performance PR organic materials are polymers blended with large amounts of low-molecular-weight components, their shelf-life time is limited due to phase separation. One way to improve the shelf-life time, which was proposed by us recently, is to use eutectic mixtures of two electrooptically active chromophores. However, in our earlier attempt in improved life time was achieved at the cost of a reduced performance due to increased absorption. In this paper, we apply this technique again with great success, not only improving the life time by a factor of 15, but at the same time improving the steady-state holographic performance by 30%.
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