We present three-dimensional, high-contrast maps of 180° domains hidden inside photorefractive crystals of BaTiO3. Some domains are columns that run the entire length of the crystal, whereas others are short needles that begin predominantly on the −c surface but disappear inside the crystal bulk.
© 1996 Optical Society of America
Original Manuscript: August 31, 1995
Published: January 1, 1996
Victor Grubsky, Stuart MacCormack, and Jack Feinberg, "All-optical three-dimensional mapping of 180° domains hidden in a BaTiO3crystal," Opt. Lett. 21, 6-8 (1996)