Simulation of gain in quantum cascade lasers

Andreas Wacker; Rikard Nelander; Carsten Weber

doi:10.1117/12.808882

3 February 2009 Simulation of gain in quantum cascade lasers

Andreas Wacker, Rikard Nelander, Carsten Weber

Proceedings Volume 7230, Novel In-Plane Semiconductor Lasers VIII; 72301A (2009) https://doi.org/10.1117/12.808882
Event: SPIE OPTO: Integrated Optoelectronic Devices, 2009, San Jose, California, United States

Abstract

The gain profile of a quantum cascade laser is strongly influenced by the lifetime of the carriers in the upper and lower laser state. The quantitative description of gain within the concept of nonequilibrium Green's functions allows for a detailed understanding of various features affecting the gain spectrum: Compensation effects between scattering processes in the upper and lower laser level, reduction of gain due to coherences between nearly degenerate upper laser states, and dispersive gain without inversion.

Citation Download Citation

Andreas Wacker, Rikard Nelander, and Carsten Weber "Simulation of gain in quantum cascade lasers", Proc. SPIE 7230, Novel In-Plane Semiconductor Lasers VIII, 72301A (3 February 2009); https://doi.org/10.1117/12.808882

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