Abstract
Polarization holographic gratings in configuration are written at 488 nm in photorefractive organic–inorganic films based on . The films, prepared by a solgel technique, contain Disperse Red 1, carbazole units, and 2,4,7-trinitro-9-fluorenone. The gratings are characterized by their diffraction efficiency for a 632.8-nm probe. The polarization gratings act as a half-wave plate, and the diffraction efficiency is independent of the polarization direction of the probe.
© 2003 Optical Society of America
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