R.J. Twieg, M. Ebert, et al.
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals
An important physical phenomenon, quasinondestructive reading, has been observed for the first time in a photorefractive polymeric material, PMMA (poly-methylmethacrylate) (1,3-dimethyl-2,2-tetramethylene-5- nitrobenzimidazoline). In addition, a maximum steady-state diffraction efficiency of 7% (125 μm sample thickness) and a net two-beam coupling gain of 16 cm-1 are observed in this polymer. A two-trap-level model, in which the levels are populated sequentially, qualitatively mimics the intensity-dependent decay rate and the transition to quasinondestructive reading. © 1994 The American Physical Society.
R.J. Twieg, M. Ebert, et al.
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals
J.D. Swalen, G.C. Bjorklund, et al.
Optical and Optoelectronic Applied Science and Engineering 1990
Ruediger Wortmann, C. Poga, et al.
Journal of Chemical Physics
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Journal of Physical Chemistry