Three-dimensional ferroelectric domain visualization by Cerenkov-type second harmonic generation.
We show that focusing a laser light onto the boundary between antiparallel ferroelectric domains leads to the non-collinear generation of two second harmonic (SH) beams. The beams are emitted in a plane normal to the domain boundaries at the angles that satisfy the Cerenkov-type phase matching condition. Moreover, these beam disappear when the laser light is focused on a homogenous part of a single domain. We utilize this effect for 3-dimensional visualization of fine details of the ferroelectric domain pattern with a submicron accuracy.
Sheng
Yan
Y
Max-Planck Institute for Polymer Research, Mainz 55128, Germany.
Best
Andreas
A
Butt
Hans-Jürgen
HJ
Krolikowski
Wieslaw
W
Arie
Ady
A
Koynov
Kaloian
K
D003198:Computer Simulation; D004867:Equipment Design; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D008027:Light; D008962:Models, Theoretical; D012031:Refractometry / Q000295:instrumentation*; D012542:Scattering, Radiation