Optical amplification at exceptional points

Q. Zhong, Michigan Technological University
S. K. Ozdemir, Pennsylvania State University
A. Eisfeld, Max Planck Institute for the Physics of Complex Systems
A. Metelmann, Freie Universität Berlin
R. El-Ganainy, Michigan Technological University

Abstract

© 2019 The Author(s). We propose a new optical amplifier geometry based on exceptional points. Compared to its standard counterpart device, the proposed structure relaxes the limitation imposed by the gain-bandwidth product.