Noncollinear optical frequency doubling in strontium barium niobate.
The observation of a novel noncollinear optical second-harmonic generation mechanism is reported. In strontium barium niobate crystals, a circular cone of second-harmonic light is generated when a fundamental beam of intensive laser light is directed along the crystallographic c axis. It can be shown that the effect is caused by the nonlinear polarization of antiparallel ordered ferroelectric microdomains.
Tunyagi
Arthur R
AR
Fachbereich Physik, Universität Osnabrück, D-49069 Osnabrück, Germany.
Ulex
Michael
M
Betzler
Klaus
K