PEREIRA, M. F. (2010). Valence intersubband gain without population inversion. CENTRAL EUROPEAN JOURNAL OF PHYSICS, 8 (1), 61-64.
Abstract
Terahertz gain without population inversion is studied in thin III-V semiconductor quantum wells. Nonequilibrium hole populations leading to intervalence gain in the transverse electric mode are investigated. The results are obtained with a Keldysh Nonequilibrium Green's Functions approach that takes into account bandstructure, manybody and nonequilibrium effects.
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