A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2011; you can also visit the original URL.
The file type is
Physical Review B
It is shown within the conventional photovoltaic charge-transport model that photoexcitable electrons, localized at deep impurity levels, can be effectively removed by light from the exposed area at sufficiently high temperatures. This allows to modify strongly the absorption and photoelectric properties of the material and, in particular, to suppress "optical damage" in LiNbO 3 and LiTaO 3 crystals. This optical cleaning method is applicable to numerous pyro-and piezo-electric opticaldoi:10.1103/physrevb.80.245319 fatcat:ldzc7zppxfaavhdlx4wwevnqbm