Abstract

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.

© 2019 Optical Society of America

Morphing discrete diffraction in nonlinear Mathieu lattices

Alessandro Zannotti, Jadranka M. Vasiljević, Dejan V. Timotijević, Dragana M. Jović Savić, and Cornelia Denz
Opt. Lett. 44(7) 1592-1595 (2019)

Probing one-dimensional topological phases in waveguide lattices with broken chiral symmetry

S. Longhi
Opt. Lett. 43(19) 4639-4642 (2018)

Stabilized Dirac points in one-dimensional non-Hermitian optical lattices

Shan Li, Shaolin Ke, Bing Wang, and Peixiang Lu
Opt. Lett. 47(18) 4732-4735 (2022)

Asymmetric near-zero edge mode in topological photonic lattice without chiral or particle-hole symmetries

Kaiwen Ji, Zhenjuan Liu, Yanan Dai, Zengrun Wen, Yishan Wang, Guoquan Zhang, Jintao Bai, and Xinyuan Qi
Opt. Lett. 45(1) 49-52 (2020)

Observation of diffraction pattern in two-dimensional optically induced atomic lattice

Jinpeng Yuan, Chaohua Wu, Lirong Wang, Gang Chen, and Suotang Jia
Opt. Lett. 44(17) 4123-4126 (2019)