Study of two-wave interaction on a mixed reflective hologram in a (001) cut Bi$_{12}$TiO$_{20}$ crystal

The regularities of amplification of subject wave for contra directional two-wave interaction on a volume reflection mixed hologram formed in a cubic optically active photorefractive piezocrystal are studied. The dependence of the relative intensity of the object light wave on the input azimuths of the linear polarization of the reference and subject waves during their simultaneous diffraction by a mixed reflection hologram in a Bi$_{12}$TiO$_{20}$ (BTO) crystal is analyzed. The polarization condition for achieving the maximum relative intensity of the subject wave for mixed reflection hologram is established. It is shown that the conditions for achieving the maximum relative intensity of the subject wave for phase and mixed reflection holograms are highly different.