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arXiv · 1409.8182

Graphene as Gain Medium for Broadband Lasers

Roland Jago·Torben Winzer·Andreas Knorr·Ermin Malic
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Abstract

In contrast to conventional structures, efficient non-radiative carrier recombination counteracts the appearance of optical gain in graphene. Based on a microscopic and fully quantum-mechanical study of the coupled carrier, phonon, and photon dynamics in graphene, we present a strategy to obtain a long-lived gain: Integrating graphene into a photonic crystal nanocavity and applying a high-dielectric substrate gives rise to pronounced coherent light emission suggesting the design of graphene-based laser devices covering a broad spectral range.

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Roland Jago, Torben Winzer, Andreas Knorr, Ermin Malic. 2014-09-29. Graphene as Gain Medium for Broadband Lasers. https://doi.org/10.1103/physrevb.92.085407

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