Self-pumped phase conjugator (SPC) and mutually pumped phase conjugator (MP
PC) are first demonstrated in a pentagon-shaped nominally undoped BaTiO3 cr
ystal. Steady phase-conjugate reflectivities up to 68% and 45%, respectivel
y, can be generated in similar to1 and similar to3 s and other dependences
are also demonstrated. (C) 2001 Elsevier Science B.V. All rights reserved.