Is single-mode lasing possible in an infinite periodic system?
- 3 August 2020
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 117 (5), 051102
- https://doi.org/10.1063/5.0019353
Abstract
In this Letter, we present a rigorous method to study the stability of periodic lasing systems. In a linear model, the presence of a continuum of modes (with arbitrarily close lasing thresholds) gives the impression that stable single-mode lasing cannot be maintained in the limit of an infinite system. However, we show that nonlinear effects of the Maxwell–Bloch equations can lead to stable systems near threshold given a simple stability condition on the sign of the laser detuning compared to the band curvature. We examine band edge (1D) and bound-in-continuum (2D) lasing modes and validate our stability results against time-domain simulations.Keywords
Funding Information
- U.S. Army (W911NF-18-2-0048)
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