Coherence and spatial resolution of transport in quantum cascade lasers

Wacker, Andreas (2008). Coherence and spatial resolution of transport in quantum cascade lasers. Physica Status Solidi. C, Current Topics in Solid State Physics, 5, (1), 215 - 220

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URL:

http://arxiv.org/abs/0706.4202

DOI:

10.1002/pssc.200776508

| Published | English

Authors:

Wacker, Andreas

Department:

Mathematical Physics
Linne Center for Nanoscience and Quantum Engineering-lup-obsolete

Research Group:

Linne Center for Nanoscience and Quantum Engineering-lup-obsolete

Abstract:
The method of nonequilibrium Greens functions allows

for a spatial and energetical resolution of the electron

current in Quantum Cascade Lasers. While scattering

does not change the spatial position of carriers, the entire spatial evolution of charge can be attributed to coherent transport by complex wave functions. We discuss the hierarchy of transport models and derive the density matrix equations as well as the hopping model starting from the nonequilibrium Greens functions approach.

ISSN:

1610-1634

LUP-ID:

f4177552-74c3-497f-bdf7-67966c221181 | Link: https://lup.lub.lu.se/record/f4177552-74c3-497f-bdf7-67966c221181 | Statistics

Coherence and spatial resolution of transport in quantum cascade lasers

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