title: Manipulation of quadratic cascading processes in a locally quasi-periodic χ(²) medium.
abstract: We theoretically and numerically investigate the quadratic cascading effect of third-harmonic (TH) generation in a locally quasi-periodic nonlinear photonic structure. We study the effect of structure parameters on the acceptance bandwidth and conversion efficiency of the cascading process. We demonstrate that the conversion efficiency of the cascading process can be enhanced by using a longer locally quasi-periodic nonlinear photonic crystal, without adversely affecting the acceptance bandwidth of the emitted radiation.
authors.forename: Wenjie
authors.initials: W
authors.lastname: Wang
authors.forename: Yan
authors.initials: Y
authors.lastname: Sheng
authors.forename: Shaoding
authors.initials: S
authors.lastname: Liu
authors.forename: Xiaoying
authors.initials: X
authors.lastname: Niu
authors.forename: Wieslaw
authors.initials: W
authors.lastname: Krolikowski