Measurement and calculation of gain spectra for (GaIn)As/(AlGa)As single quantum well lasers

C. Ellmers, A. Girndt, M. Hofmann, A. Knorr, W. W. Rühle, F. Jahnke, S. W. Koch, C. Hanke, L. Korte, C. Hoyler

Research output: Contribution to journalArticlepeer-review

35 Scopus citations


The gain spectrum of a (GaIn)As/(AlGa)As single-quantum-well laser diode is precisely measured at various currents in order to quantitatively check the predictions of a microscopic model. The theory includes carrier - carrier and carrier - LO-phonon collisions which lead to optical dephasing and screening of the Coulomb interaction. The measurements are based on a transmission technique using the broad spectrum of a 10 fs Ti:sapphire laser to obtain sufficient signal to noise ratio over a wide spectral range. We obtain excellent agreement between theoretical and experimental gain spectra and thus can clearly demonstrate the predictive capability of our microscopic model.

Original languageEnglish (US)
Pages (from-to)1647-1649
Number of pages3
JournalApplied Physics Letters
Issue number13
StatePublished - 1998

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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