Abstract
Thermal fixing in a photorefractive crystal is demonstrated all the way down to room
temperature. This, to our knowledge, is the first report of such an effect
in any photorefractive material. From the temperature dependence of the process
the activation energy of the carriers involved in the fixing process is measured
to be . Further, an effective photorefractive charge density of and Debye screening length of is measured.
© 1999 Optical Society of America
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