Large optically homogeneous photorefractive Bi12TiO20 single crystals doped
with Al, P, Ag, Ctl, Co and Al + P are obtained by the top seeded solution
growth method in a Bi2O3 solution. A strong bleaching effect is observed a
t Al, P, Ag and Al + P doped crystals, whereas doping with Cu and Co induce
d a strong photochromic effect and increased the absorption coefficients in
a red spectral region. Al, P and Al + P doped crystals increased the value
s of optical rotation power, while Cu and Ag-doped crystals lead to strong
decreasing of optical activity in comparison with non-doped Bi12TiO20. (C)
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