Spontaneous Emission Measuremetns on Two and Three Strained GaInP Quantum Well Laser Diodes

Copyright [©] (1995) by IEEE. Permission to make digital or hard copies of part or all of this work for personal or classroom use is granted without fee provided that copies are not made or distrubuted for profit. To copy otherwise, to republish, to post on servers, or to redistribute to lists, requires prior specific permission and/or a fee.

        Unamplified spontaneously emitted light was measured through openings in the top contact of GaInP strained quantum well ridge lasers. The data was recorded over a spectral range from 1.65 to 2.25 eV for different injection currents below threshold. Hakki-Paoli gain measurements of the same devices were used to determine the
        quasi-Fermi level separation and the scaling constant needed to calculate the modal gain from spontaneous emission spectra. The refractive index change due to current injection and the linewidth enhancement factor were derived from this data.

By: G. Hunziker, P. Unger, C. Harder and W. Knop (Swiss Fed. Inst. of Tech.)

Published in: IEEE Journal of Quantum Electronics, volume 31, (no 4), pages 643-646. in 1995

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