Nonlinear photonic crystals near the supercollimation point.
نویسندگان
چکیده
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.
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عنوان ژورنال:
- Optics letters
دوره 33 15 شماره
صفحات -
تاریخ انتشار 2008