Overcoming Auger Recombination in Nanocrystal Quantum Dot Laser Using Spontaneous Emission Enhancement

Opt. Exp. 22, 3013 (2014)https://ireap.umd.edu/10.1364/OE.22.0030132014Journal ArticleNonlinear and Quantum Photonics

We propose a method to overcome Auger recombination in nanocrystal quantum dot lasers using cavity-enhanced spontaneous emission. We derive a numerical model for a laser composed of nanocrystal quantum dots coupled to optical nanocavities with small mode-volume. Using this model, we demonstrate that spontaneous emission enhancement of the biexciton transition lowers the lasing threshold by reducing the effect of Auger recombination. We analyze a photonic crystal nanobeam cavity laser as a realistic device structure that implements the proposed approach.