Open AccessManipulation of quadratic cascading processes in a locally quasi-periodic χ^(2) medium
Author(s) -
Wenjie Wang,
Yan Sheng,
ShaoDing Liu,
Xiaoying Niu,
Wiesław Królikowski
Publication year - 2014
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.006976
Subject(s) - bandwidth (computing) , quadratic equation , nonlinear system , optics , photonic crystal , nonlinear optics , second harmonic generation , physics , photonics , radiation , nonlinear photonic crystal , optoelectronics , computer science , telecommunications , mathematics , quantum mechanics , laser , geometry
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.