Generation of second-harmonic conical waves via nonlinear bragg diffraction.
Generation of second-harmonic conical waves via nonlinear bragg diffraction.
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DOI：
10.1103/physrevlett.100.103902
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发表时间：
2007-08
影响因子：
8.6
通讯作者：
S. Saltiel;D. Neshev;R. Fischer;W. Krolikowski;A. Arie;Y. Kivshar
中科院分区：
文献类型：
--
作者：
S. Saltiel;D. Neshev;R. Fischer;W. Krolikowski;A. Arie;Y. Kivshar
We report on the observation of second-harmonic conical waves generated in a novel geometry of the transverse excitation of an annular periodically poled nonlinear photonic structure by a fundamental Gaussian beam. We show that the conical beams are formed as a result of the higher-order nonlinear Bragg diffraction involving two parametric processes in which an ordinary fundamental wave is converted simultaneously into ordinary and extraordinary polarized second harmonics.
