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1994
Journal Article
Title
Photothermal poling of nonlinear optical polymer films
Abstract
Photothermal heating of a nonlinear optical polymer film with a focused laser beam leads to local temperatures above the glass transition so that the molecular dipoles orient in the electric field applied to the electrodes. Periodic switching of the field direction during movement of the sample yields gratings with alternating polarity which were studied with scanning electro-optical microscopy. The width and the depth of the poled stripes were probed with electro-optical and pyroelectrical techniques, respectively. Photothermal poling may be combined with other poling techniques in order to produce various dipole-orientation patterns for device applications.
Keyword(s)
dielectric polarisation
electro-optical effects
nonlinear optics
optical films
optical microscopy
optical polymers
photothermal effects
polymer films
pyroelectricity
photothermal poling
nonlinear optical polymer films
focused laser beam
molecular dipole orientation patterns
electric field
periodic switching
gratings
scanning electro-optical microscopy
pyroelectrical techniques
electro-optical techniques
glassy polymers