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Scanning electro-optical and pyroelectrical microscopy for the investigation of polarization patterns in poled polymers



Applied Physics Letters 63 (1993), Nr.13, S.1724-6
ISSN: 0003-6951
ISSN: 1077-3118
Fraunhofer HHI ()
dielectric polarisation; electro-optical effects; optical harmonic generation; optical microscopy; optical polymers; pyroelectricity; scanning electron microscope examination of materials; scanning pyroelectrical microscopy; polarization patterns; periodically poled layers; nonlinear optical side-chain polymer; scanning electro-optical microscope; spatial resolution; contrast; patterned poling; nonlinear optical waveguides; modulators; sensors

Compact and simple experimental setups for scanning pyroelectrical and electro-optical microscopy are introduced. Their feasibility is demonstrated with scans of periodically poled layers of a nonlinear optical side-chain polymer. While the scanning pyroelectrical microscope has a less complex design and is easier to use, the scanning electro-optical microscope exhibits better spatial resolution and higher contrast. Both tools will be essential for optimizing the patterned poling of nonlinear optical waveguides, modulators, and sensors.