Pyramid diffraction in parity-time-symmetric optical lattices.
نویسندگان
چکیده
Nonlinear dynamics of wave packets in two-dimensional parity-time-symmetric optical lattices near the phase transition point are analytically studied. A fourth-order equation is derived for the envelope of these wave packets. A pyramid diffraction pattern is demonstrated in both the linear and nonlinear regimes. Blow-up is also possible in the nonlinear regime for both focusing and defocusing nonlinearities.
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ورودعنوان ژورنال:
- Optics letters
دوره 38 11 شماره
صفحات -
تاریخ انتشار 2013