Third-harmonic generation via nonlinear Raman–Nath diffraction in nonlinear photonic crystal
We report on the observation of multiple third-harmonic conical waves generated in an annular periodically poled nonlinear photonic crystal. We show that the conical beams are formed as a result of the cascading effect involving two parametric processes that satisfy either the transverse and/or longitudinal phase-patching conditions. This is the first experimental observation of third-harmonic generation based on nonlinear Raman–Nath diffraction.
|Collections||ANU Research Publications|
|Access Rights:||Open Access|
Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.