Abstract

Near-field optical microscopy has been used to study photorefractive surface waves in BaTiO3. The field distribution of the photorefractive surface wave near the crystal–air interface has been measured and compared with theory. Experimental data indicate that a micrometer-wide transition layer with dielectric and photorefractive properties that are different from the properties of the bulk BaTiO3 exists near the interface.

© 1999 Optical Society of America

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