Nanowire terahertz quantum cascade lasers

Thomas Grange (1)

1 NEEL - NPSC - Nanophysique et Semiconducteurs

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

Domaines: Physique [physics]

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