Room-temperature photoluminescence spectra of (sample A) and (sample B) QWs.
Material gain spectra at threshold for samples A and B deduced from spectral gain measurements on ridge waveguide lasers at room temperature.
Confinement potentials [(a) and (c), potentials of completely relaxed samples are also shown as dashed lines for comparison], ground-state eigenvalues, amplitude distributions of eigenfunctions, and optical couplings [(b) and (d)] of samples A and B when .
Energy band dispersions .
Densities of states. Thin lines: sample A; thick lines: sample B .
Optical gain spectra of sample A (thin lines) and sample B (thick lines) ( and ). The densities of injected carriers for sample A are 1.6, 2.2, and and those for sample B are 1.92, 2.22, and .
Quasi-Fermi levels in the conduction (CB) and valence bands (VB) measured with respect to the ground states. Thin lines: sample A; thick lines: sample B.
The quantum well laser structure.
Article metrics loading...
Full text loading...