Third-harmonic generation via broadband cascading in disordered quadratic nonlinear media.
We study parametric frequency conversion in quadratic nonlinear media with disordered ferroelectric domains. We demonstrate that disorder allows realizing broadband third-harmonic generation via cascading of two second-order quasi-phase matched nonlinear processes. We analyze both spatial and polarization properties of the emitted radiation and find the results in agreement with our theoretical predictions.
Wang
W
W
Nonlinear Physics Center and Laser Physics Center, Research School of Physics and Engineering, Australian National University, Canberra ACT 0200, Australia.
Roppo
V
V
Kalinowski
K
K
Kong
Y
Y
Neshev
D N
DN
Cojocaru
C
C
Trull
J
J
Vilaseca
R
R
Staliunas
K
K
Krolikowski
W
W
Saltiel
S M
SM
Kivshar
Yu
Y
D003198:Computer Simulation; D008027:Light; D008420:Manufactured Materials; D008962:Models, Theoretical; D017711:Nonlinear Dynamics; D012031:Refractometry / Q000379:methods*; D012542:Scattering, Radiation