BATIO3 WAVE-GUIDE SELF-PUMPED PHASE CONJUGATOR

For the first time to our knowledge, self-pumped phase conjugation is reported in a planar waveguide structure in a BaTiO3 single crystal. T he waveguide was fabricated by the technique of ion implantation, with 1.5-MeV H+ ions at a dose of 10(16) ions/cm2. Phase-conjugate reflect ivities >20% have been measured for waveguide self-pumped phase conjug ation, and, for a given input power, an order-of-magnitude reduction i n the response time is observed in the waveguide compared with the bul k. The fidelity of phase conjugation in the guide is also discussed.