Grating structure in self-pumping barium titanate by local erasure
- 25 July 1988
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 53 (4) , 262-264
- https://doi.org/10.1063/1.100141
Abstract
A method of examining the photorefractive grating in a self-pumping barium titanate crystal is described; in this method, photorefractive grating elements are sequentially erased using a fine pulsed beam of photocarrier-generating light, while the resulting decrements in the phase-conjugate output are recorded. The erase beam scans the crystal in raster fashion, producing a map of decrements in the phase-conjugate output; these are interpreted as indicating the position of volume photorefractive grating elements that contribute to the phase-conjugate output. The results show that important elements of grating structure do exist in the front region of the crystal where the pumping beam enters.Keywords
This publication has 4 references indexed in Scilit:
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