Publication: Self-dual spectral singularities and coherent perfect absorbing lasers without PT-symmetry
Files
Program
KU-Authors
KU Authors
Co-Authors
Publication Date
Language
Type
Embargo Status
NO
Journal Title
Journal ISSN
Volume Title
Alternative Title
Abstract
A PT-symmetric optically active medium that lases at the threshold gain also acts as a complete perfect absorber at the laser wavelength. This is because spectral singularities of PT-symmetric complex potentials are always accompanied by their time-reversal dual. We investigate the significance of PT-symmetry for the appearance of these self-dual spectral singularities. In particular, using a realistic optical system we show that self-dual spectral singularities can emerge also for non-PT-symmetric configurations. This signifies the existence of non-PT-symmetric coherent perfect absorbing lasers.
Source
Publisher
Institute of Physics (IOP) Publishing
Subject
Multidisciplinary physics, Mathematical physics
Citation
Has Part
Source
Journal of Physics A
Book Series Title
Edition
DOI
10.1088/1751-8113/45/44/444024