2 papers
cond-mat.other2004
Controlling many-body effects in the midinfrared gain and THz absorption of quantum cascade laser structures
M. F. Pereira, S. -C. Lee, A. Wacker
A many-body theory based on nonequilibrium Green functions, in which transport and optics are treated on a microscopic quantum mechanical basis, is used to compute gain and absorpt…
cond-mat.mes-hall2002
Nonequilibrium Green's function theory for transport and gain properties of quantum cascade structures
S. -C. Lee, A. Wacker
The transport and gain properties of quantum cascade (QC) structures are investigated using a nonequilibrium Green's function (NGF) theory which includes quantum effects beyond a B…