Nanowire terahertz quantum cascade lasers

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. Nanowire terahertz quantum cascade lasers. Applied Physics Letters, American Institute of Physics, 2014, 105 (14), pp.141105. ⟨10.1063/1.4897543⟩. ⟨hal-01379172⟩

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