Abstract

The presence of shallow traps^1,2 and hole-electron photoconductivity^3,4 in recent models of photorefraction in barium titanate account for much of their experimentally observed behavior. Most of the studies have been performed with continuous-wave illuminating beams up to a few tens of W/cm². Up to now few systematic studies have been performed with short duration pulses and high peak intensity.^4,5 Pulsed illumination measurements are important because they give us additional information about photorefractive properties and because of its potential for practical applications.

© 1994 IEEE