Guruswamy et al, "Self-Pumped Phase Conjugation In BaTiO3:Ce", Organization of O.S.A. Photonic Science Topical Meeting Series, vol. 14, pp. 420-422, Jul. 1991. |
"Theoretical active impurity levels of iron, chromium, and managanese for photorefractive effects in barium titanate", P. Moretti, et al., J. Opt. Soc. Am. B, vol. 5, No. 8/Aug. 1988, pp. 1697-1701. |
"High beam-coupling gain and deep- and shallow-trap effects in cobalt-doped barium titante, BaTiO.sub.3 :Co," M. H. Garrett, et al, J. Opt. Soc. Am. B, vol. 9, No. 8/Aug. 1992, pp. 1407-1415. |
"Effect of Iron On The Photorefractive Properties of BaTiO.sub.3 Single Crystals," G. Godefroy, et al., 1986 (no month), 4 p. (Journal not named). |
"Optical and Electrical Properties of Nb Doped BaTio.sub.3 Single Crystals Grown by the KF Flux Or The Pulling Method," P. Moretti, et al., Ferroelectrics, 1981, vol. 37, pp. 721-724 (no month). |