Abstract

If an extraordinary polarized laser beam A₁ is incident on an electrically poled BaTiO₃ crystal, the specular reflection A₁R₁ and the second surface reflection A₁R₂ decrease in intensity, while the phase conjugate A₁^* and the associated transmissions A₁T₁, A₁T₂ de velop.¹ These effects can be dramatically observed with self-pumped phase conjugate oscillations, which are cross-coupled to the transmissions and reflections of an intersecting incoherent beam. A He-Ne laser beam A₁ (25mw) with an angle of incidence,, enters the crystal at 2mm from one edge. A₁^*, A₁T₁, and A₁T₂ show regular oscillations, while A₁R₁ and A₁R₂ show oscillations, our of phase with those of A^*l. If an incoherent beam A₂ with ,, is put on, A^*2 and A₂T₁ decrase in intensity and exhibit oscillaitons through beam coupling.

© 1990 Optical Society of America