Constant intensity conical diffraction in discrete one-dimensional lattices with charge-conjugation symmetry
Constant intensity conical diffraction in discrete one-dimensional lattices with charge-conjugation symmetry
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DOI：
10.1364/ol.45.000101
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发表时间：
2019
期刊：
影响因子：
3.6
通讯作者：
Mojgan Dehghani;C. Yuce;T. Kottos;H. Ramézani
中科院分区：
文献类型：
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作者：
Mojgan Dehghani;C. Yuce;T. Kottos;H. Ramézani
我们设计了反常锥形衍射 (CD)，当异常点位于构成初始激发的模式附近时，该现象会在具有电荷共轭对称性的离散一维晶格中发生。演变的波形以弹道方式传播，在扩散锥体的边界内获得恒定的强度分布。总强度沿传播方向的线性增加是产生恒定强度 CD 的原因。
We engineer anomalous conical diffraction (CD), occurring in discrete one-dimensional lattices with charge-conjugation symmetry when an exceptional point is in the proximity of the modes that compose the initial excitation. The evolving waveform propagates ballistically, acquiring a constant intensity profile within the boundaries of the spreading cone. The linear increase in the total intensity along the propagation direction is responsible for the generation of constant intensity CD.