Theory of quasiequilibrium nonlinear optical absorption in semiconductor superlattices

K. C. Je, T. Meier, F. Rossi, S. W. Koch

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


Quasiequilibrium nonlinear optical absorption spectra are computed for semiconductor superlattices. The theory generalizes the semiconductor Bloch equations to describe anisotropic structures. The equation for the interband polarization is solved numerically and the carrier-density dependent optical nonlinearities are computed. Starting from excitonic absorption, with increasing density exciton saturation and the development of gain is observed. The dependence of the gain spectra on structural parameters of the superlattice is discussed.

Original languageEnglish (US)
Pages (from-to)2978
Number of pages1
JournalApplied Physics Letters
StatePublished - 1995

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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