Double phase-conjugate mirror using a photorefractive Bi(12)TiO(20) crystal.
Experimental results are reported for four-wave mixing at 633 nm with a photorefractive Bi(12)TiO(20) crystal in a double phase-conjugate mirror geometry. Recording in the presence of an alternating electric field with optimum focusing of interacting Gaussian beams yields up to 40% diffraction efficiency for the hologram.
Petrov
M P
MP
Sochava
S L
SL
Stepanov
S I
SI