We report the formation of permanent two-dimensional 12-µm waveguides in a bulk strontium barium niobate crystal. The waveguides are made by formation of a photorefractive spatial soliton in which the space-charge field induces ferroelectric domains that are permanently polarized opposite to the crystal c axis. The fixed waveguide propagates light with 80% efficiency. These results make possible the permanent recording of intricate optical circuitry in the volume of a bulk crystal.
© 1999 Optical Society of America
(190.0190) Nonlinear optics : Nonlinear optics
Matt Klotz, Hongxing Meng, Gregory J. Salamo, Mordechai Segev, and Steven R. Montgomery, "Fixing the photorefractive soliton," Opt. Lett. 24, 77-79 (1999)