Nonlinear photonic crystals near the supercollimation point.
Nonlinear photonic crystals near the supercollimation point.
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DOI：
10.1364/ol.33.001762
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发表时间：
2008-07
期刊：
影响因子：
3.6
通讯作者：
Zhiyong Xu;B. Maes;Xunya Jiang;J. Joannopoulos;L. Torner;M. Soljačić
中科院分区：
文献类型：
--
作者：
Zhiyong Xu;B. Maes;Xunya Jiang;J. Joannopoulos;L. Torner;M. Soljačić
We uncover a strong coupling between nonlinearity and diffraction in a photonic crystal at the supercollimation point. We show that this is modeled by a nonlinear diffraction term in a nonlinear-Schrödinger-type equation in which the properties of solitons are investigated. Linear stability analysis shows solitons are stable in an existence domain that obeys the Vakhitov-Kolokolov criterium. In addition, we investigate the influence of the nonlinear diffraction on soliton collision scenarios.
