Pump-induced Exceptional Points in Lasers
Optics
2012-04-25 v2
Abstract
We demonstrate that the above-threshold behavior of a laser can be strongly affected by exceptional points which are induced by pumping the laser nonuniformly. At these singularities, the eigenstates of the non-Hermitian operator which describes the lasing modes coalesce. In their vicinity, the laser may turn off even when the overall pump power deposited in the system is increased. Such signatures of a pump- induced exceptional point can be experimentally probed with coupled ridge or microdisk lasers.
Keywords
Cite
@article{arxiv.1109.0454,
title = {Pump-induced Exceptional Points in Lasers},
author = {M. Liertzer and Li Ge and A. Cerjan and A. D. Stone and H. E. Türeci and S. Rotter},
journal= {arXiv preprint arXiv:1109.0454},
year = {2012}
}
Comments
4.5 pages, 4 figures, final version including additional FDTD data