Topic
Organic photorefractive materials
About: Organic photorefractive materials is a research topic. Over the lifetime, 697 publications have been published within this topic receiving 13041 citations.
Papers published on a yearly basis
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TL;DR: In this paper, edge enhancement, a type of intensity filtering of two-dimensional optical image, was demonstrated using dye-doped photorefractive liquid crystal films, and the expected images were calculated using four wave mixing geometries.
Abstract: Edge enhancement, a type of intensity filtering of two-dimensional optical image, was demonstrated using dye-doped photorefractive liquid crystal films. We calculate the expected images using four wave mixing geometries, which show good agreement with the image that we experimentally observed using dye-doped liquid crystal as the photorefractive materials.
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23 May 1999TL;DR: In this paper, the conduction properties of photorefractive (PR) polymer films are investigated by taking advantage of the non-steadystate photo-ElectroMotive Force (or photo-EMF) effect.
Abstract: Summary form only given. The space-charge gratings and the conduction properties of photorefractive (PR) polymer films are investigated by taking advantage of the non-steady-state photo-ElectroMotive Force (or photo-EMF) effect. When a hologram is recorded under non-stationary conditions, e.g. by a vibrating interference pattern, interaction between the quasi-stationary space-charge field grating and the vibrating distribution of mobile charge carriers leads to a periodic electric current (photo-EMF current J/sup /spl Omega//) with the same frequency /spl Omega/ as the vibration of the interference pattern. Furthermore, if an external DC field is applied, a second harmonic photo-EMF current (J/sup 2/spl Omega//) is observed.
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08 Jul 2001
TL;DR: In this paper, a periodically phase modulated two-wave mixing technique was applied to obtain simultaneously the absorption and refractive index contributions to the diffraction efficiency, and the amplitude and phase of the refractive and absorption index changes were measured.
Abstract: We apply a periodically phase modulated two-wave mixing technique to obtain simultaneously the absorption and refractive index contributions to the diffraction efficiency. The technique allows us to measure the amplitude and phase of the refractive and absorption index changes, and therefore their relative contributions to the diffraction efficiency with high sensitivity.
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01 Jan 1996
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07 Nov 2012TL;DR: In this paper, an enhanced photorefractive index grating was developed in compound semiconductor, where the two pico-second light pulses couple inside a semiconductor crystal at 77 K under Voigt configuration, near the resonance condition in the presence of magnetic field.
Abstract: Enhanced and fast photorefractive index grating is developed in compound semiconductor, when the two pico-second light pulses couple inside compound semiconductor crystal at 77 K under Voigt configuration, near the resonance condition in the presence of magnetic field.