Anomalous space-charge field enhancement in Fe:KNbO3
ORAL
Abstract
Photorefractive measurements on Fe:KNbO$_{3}$ using self-pumped two-wave mixing have revealed the formation of a large bulk electric field with characteristics similar to those arising from the photovoltaic effect. The magnitude of the field necessary to account for the observed optical effects is much greater than the directly measured photovoltaic field.
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