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arXiv · 1301.6384

Dynamical properties of nanolasers based on few discrete emitters

Anders Moelbjerg·Per Kaer·Michael Lorke·Bjarne Tromborg·Jesper Mørk
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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.

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Anders Moelbjerg, Per Kaer, Michael Lorke, Bjarne Tromborg, Jesper Mørk. 2013-01-27. Dynamical properties of nanolasers based on few discrete emitters. https://doi.org/10.1109/jqe.2013.2282464

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