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Schematic diagram of structures.
TE polarized optical loss spectra.
TE polarized modal gain spectra for samples with (circles) and without (squares) nitrogen for three injection levels and peak gain amplitude vs wavelength of peak modal gain for other injection levels (closed symbols).
InGaAs and InGAAsN peak gain vs peak gain energy (squares) and peak gain vs quasi-Fermi level separation (circles) where the InGaAsN data have been rigidly energy shifted by 50.3 and 48.5 meV, respectively, to allow comparison.
Measured TE polarized peak gain vs spontaneous radiative current density for samples with (circles) and without (squares) nitrogen. The lines are the standard logarithmic function used for quantum wells fitted to the data.
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