Nanowire terahertz quantum cascade lasers

Thomas Grange

doi:10.1063/1.4897543

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arXiv · 1301.1258

Nanowire terahertz quantum cascade lasers

Thomas Grange

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Abstract

Quantum cascade lasers made of nanowire axial heterostructures are proposed. The dissipative quantum dynamics of their carriers is theoretically investigated using non-equilibrium Green functions. Their transport and gain properties are calculated for varying nanowire thickness, from the classical-wire regime to the quantum-wire regime. Our calculation shows that the lateral quantum confinement provided by the nanowires allows an increase of the maximum operation temperature and a strong reduction of the current density threshold compared to conventional terahertz quantum cascade lasers.

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Thomas Grange. 2014-10-07. Nanowire terahertz quantum cascade lasers. https://doi.org/10.1063/1.4897543

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