Photorefractive wave mixing at 854 nm in a rhodium doped BaTiO/sub 3/ planar waveguide implanted with He/sup +/

Summary form only given. At the infrared wavelengths, a few studies have been dedicated to the photorefractive properties of waveguides fabricated with oxide ferroelectric crystals. For the first time, a waveguide is fabricated by the technique of ion-beam implantation in a BaTiO/sub 3/:Rh substrate. The characteristics of the photorefractive effect are studied via two-beam coupling experiments.