Progress in II-VI photorefractives

Photorefractive ZnTe and CdTe crystals doped with vanadium and/or manganese were grown and characterized in the wavelength range of 0.63 micrometers to 1.52 micrometers . The highest gain was observed in ZnTe:Mn:V (1.5 cm-1 at 0.63 micrometers ). Through the use of both dopants the effective trap density was increased over an order of magnitude to 4.8 X 1015 cm-3. The wavelength sensitivity range of cadmium telluride photorefractives was extended to less than 0.6 micrometers in CD0.55Mn0.45Te:V.