WAVE-GUIDE MUTUALLY PUMPED PHASE CONJUGATORS

The operation of the bridge mutually pumped phase conjugator is report ed in a planar waveguide structure in photorefractive BaTiO3. The wave guide was fabricated by the technique of ion implantation, using 1.5-M eV H+ ions at a dose of 10(16) ions/cm2. An order of magnitude decreas e in response time is observed in the waveguide as compared with typic al values obtained in bulk crystals, probably as a result of a combina tion of the optical confinement within the waveguide and possible modi fication of the charge-transport properties induced by the implantatio n process.