Diffraction-free beam propagation at the exceptional point of non-Hermitian Glauber Fock lattices
Abstract
We construct localized beams in a non-Hermitian Glauber Fock (NGF) lattice of coupled waveguides and show that they can propagate over a long distance withalmost no diffraction. We specifically obtain the diffraction-free beams in a finite NGF lattice at the exceptional point (EP) by using the exact eigenstates of the semi-infinite unidirectional NGF lattice. We provide a numerical approach to finding other lattices that are capable of supporting non-diffracting beams at EPs.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Oct 19, 2022
- Source ID
- 10.1088/2040-8986/ac868e
Entities
People
- Cem Yuce
- Hamidreza Ramezani
Organizations
- Division of Physics
- United States Army Research Laboratory