Intersubband population inversion in quantum wire structures

S. Briggs, D. Jovanovic, Jean-Pierre Leburton

Research output: Contribution to journalArticlepeer-review


When the spacing between subbands in a quantum wire is equal to the optic phonon energy a situation occurs under longitudinal field conditions where the upper subband population is enhanced with respect to the lower subband. We focus our investigation on the case where a third, intermediate subband is located slightly below the upper subband. We use a Monte Carlo simulation and obtain a population inversion between the upper and intermediate subbands. Intersubband optical transitions with the possibility of far-infrared stimulated emission seem to be significant.

Original languageEnglish (US)
Pages (from-to)2012-2014
Number of pages3
JournalApplied Physics Letters
Issue number20
StatePublished - Dec 1 1989

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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