James, S.W., Youden, K.E., Jeffrey, P.M., Eason, R.W., Chandler, P.J., Zhang, L. and Townsend, P.D.
BaTiO3 waveguide self-pumped phase conjugator
Optics Letters, 18, (14), . (doi:10.1364/OL.18.001138).
For the first time to our knowledge, self-pumped phase conjugation is reported in a planar waveguide structure in a BaTiO3 single crystal. The waveguide was fabricated by the technique of ion implantation, with 1.5-MeV H+ ions at a dose of 10^16 ions/cm^2. Phase-conjugate reflectivities >20% have been measured for waveguide self-pumped phase conjugation, and, for a given input power, an order-of-magnitude reduction in the response time is observed in the waveguide compared with the bulk. The fidelity of phase conjugation in the guide is also discussed.
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