Many-body theory for II–VI semiconductor laser media

HENNEBERGER, K., GÜLDNER, H., MANZKE, G., PENG, Q. Y. and PEREIRA, Mauro (1999). Many-body theory for II–VI semiconductor laser media. In: KRAMER, Bernhard, (ed.) Advances in Solid State Physics. Berlin, Springer Berlin Heidelberg, 61-73.

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We study the interplay between resonant cavity, carrier-quantum confinement and many-body effects by means of a Keldysh Green’s function approach which treats the relevant quasi-particles (photons, carriers and plasmons) within a fully quantum-mechanical footing. In order to consistently describe the gain lineshape and spectral position of lasing, it is demonstrated that both Coulomb effects within mean-field contributions and higher order many-body effects as screening, diagonal and off-diagonal dephasing and renormalization of the interband energy have to be taken into account. Strong compensation between diagonal and off-diagonal contributions is found. Numerical results for II–VI heterostructures under quasi-equilibrium conditions and for temperatures ranging from 100 K to 300 K are compared with recent experimental findings. Solving the kinetic equation of photons transient spectral and temporal oscillations experimentally observed in the laser emission are shown to result from memory effects.

Item Type: Book Section
Research Institute, Centre or Group - Does NOT include content added after October 2018: Materials and Engineering Research Institute > Advanced Coatings and Composites Research Centre > Electronic Materials and Sensors Research Group
Identification Number:
Page Range: 61-73
Depositing User: Helen Garner
Date Deposited: 19 Nov 2014 13:22
Last Modified: 18 Mar 2021 19:00

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