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- W1972528907 abstract "Azo dye polymers have been investigated as polarization holographic recording and all-optical modulating media. The use of azo dye polymers is limited by their intrinsic low response time. Different dyes and fabrication techniques have been utilized to enhance the material's speed. A relatively new modulation technique utilizing the nonlinear Fabry-Perot effect in attenuated total internal reflection (ATR) geometry is compared to the conventional transmission type modulation geometry. In the ATR case, a small change in the index of the polymer causes a shift in the angular spectrum of the Fabry-Perot resonances, thus enabling us to modulate a probe beam with an external pump beam. Both modulation speed and contrast ratio are greatly enhanced using this technique. Experimental results are presented, and the limits of both methods are analyzed. The ATR method is also useful in characterizing thin (less than a few microns) polymer films, for studying photo-induced index changes. Future applications, such as optically addressed spatial light modulators and nonlinear optical processing applications, are discussed." @default.
- W1972528907 created "2016-06-24" @default.
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- W1972528907 date "1993-01-14" @default.
- W1972528907 modified "2023-09-23" @default.
- W1972528907 title "<title>Azo-dye polymer-based modulation in total internal reflective Fabry-Perot geometry</title>" @default.
- W1972528907 doi "https://doi.org/10.1117/12.139167" @default.
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