title: Third-harmonic generation via broadband cascading in disordered quadratic nonlinear media.
abstract: 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.
authors.affiliation: Nonlinear Physics Center and Laser Physics Center, Research School of Physics and Engineering, Australian National University, Canberra ACT 0200, Australia.
authors.forename: W
authors.initials: W
authors.lastname: Wang
authors.forename: V
authors.initials: V
authors.lastname: Roppo
authors.forename: K
authors.initials: K
authors.lastname: Kalinowski
authors.forename: Y
authors.initials: Y
authors.lastname: Kong
authors.forename: D N
authors.initials: DN
authors.lastname: Neshev
authors.forename: C
authors.initials: C
authors.lastname: Cojocaru
authors.forename: J
authors.initials: J
authors.lastname: Trull
authors.forename: R
authors.initials: R
authors.lastname: Vilaseca
authors.forename: K
authors.initials: K
authors.lastname: Staliunas
authors.forename: W
authors.initials: W
authors.lastname: Krolikowski
authors.forename: S M
authors.initials: SM
authors.lastname: Saltiel
authors.forename: Yu
authors.initials: Y
authors.lastname: Kivshar
mesh_terms: D003198:Computer Simulation; D008027:Light; D008420:Manufactured Materials; D008962:Models, Theoretical; D017711:Nonlinear Dynamics; D012031:Refractometry / Q000379:methods*; D012542:Scattering, Radiation