Self-collimation in PT -symmetric crystals
نویسندگان
چکیده
We predict the self-collimation phenomena (or equivalently, dynamical localization) in two-dimensional PT symmetric complex potentials, where the complex modulation is considered in the transverse, longitudinal, or simultaneously in both directions. Nondiffractive propagation is analytically predicted and further confirmed by numerical integration of a paraxial model. The parameter space is explored to identify the self-collimation regime in crystals with different PT symmetries. In addition, we also analyze how the PT -symmetric potentials determine the energy distribution between spatial modes of the self-collimated beams.
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تاریخ انتشار 2017