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- W3000679617 abstract "Two-beam-coupling gain coefficients exceeding the absorption coefficient are demonstrated for the first time to our knowledge in an organic photorefractive system. The material is based on the photoconducting polymer poly(N-vinylcarbazole), doped with the optically nonlinear chromophore 3-fluoro-4-N,N-diethylamino-β-nitrostyrene and sensitized for charge generation with 2,4,7-trinitro-9-fluorenone. The photorefractive performance is significantly better than that of any previously described organic. Diffraction efficiencies as large as 1% in a 125-μm sample, grating growth times of the order of 100 ms, and beam-coupling gain coefficients >10 cm−1 were observed at 647 nm (writing intensity of 1 W cm−2, applied field of 40 V μm−1)." @default.
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- W3000679617 date "1995-07-01" @default.
- W3000679617 modified "2023-09-23" @default.
- W3000679617 title "Net two-beam-coupling gain in a polymeric photorefractive material" @default.
- W3000679617 doi "https://doi.org/10.1142/9789812832047_0059" @default.
- W3000679617 hasPublicationYear "1995" @default.
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