Second-harmonic parametric scattering in ferroelectric crystals with disordered nonlinear domain structures.
We study the second-harmonic (SH) parametric processes in unpoled crystals of Strontium Barium Niobate (SBN) with disordered structures of ferroelectric domains. Such crystals allow for the simultaneous phase matching of several second-order nonlinear processes. We analyze the polarization properties of these parametric processes using two types of generation schemes: quasi-collinear SH generation and transverse SH generation. From our experimental data we determine the ratio of d(32) and d(33) components of the second order susceptibility tensor and also the statistical properties of the random structure of the SBN crystal.
Trull
Jose
J
Cojocaru
Crina
C
Fischer
Robert
R
Saltiel
Solomon M
SM
Staliunas
Kestutis
K
Herrero
Ramon
R
Vilaseca
Ramon
R
N Neshev
Dragomir
D
Krolikowski
Wieslaw
W
Kivshar
Yuri S
YS