Dynamical properties of nanolasers based on few discrete emitters
Abstract
We investigate the dynamical properties of nanolasers comprising a few two-level emitters coupled to an optical cavity. A set of rate equations is derived, which agree very well with a solution of the full master equation model and makes it simple to investigate the properties of the system. Using a linearized version of these rate equations, we can analytically express the response of the nanolaser to a modulation of the pumping rate. These results are compared to the modulation response obtained directly from the master equation using a novel method. Using the rate equation method, we calculate the modulation bandwidth and show that, contrary to conventional semiconductor lasers, the nanolaser is typically over-damped and displays a dip in the modulation bandwidth as the two-level systems become inverted. Both these features can be traced back to the modeling of the emitters as two-level systems that are incoherently pumped.
Keywords
Cite
@article{arxiv.1301.6384,
title = {Dynamical properties of nanolasers based on few discrete emitters},
author = {Anders Moelbjerg and Per Kaer and Michael Lorke and Bjarne Tromborg and Jesper Mørk},
journal= {arXiv preprint arXiv:1301.6384},
year = {2014}
}
Comments
11 pages, 5 figures