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Abstract: In this work, a theoretical model that calculates the gain versus current density relationship for IV-VI semiconductor quantum-well lasers was developed. The model, based on Kane's two-band ...

We have also recorded PA spectra of Fe/sub 2/O/sub 3/, ZnO, NiCO/sub 3/ and TiO/sub 2/. By observing the position of the peaks and intensities, we have arrived at the conclusion that Fe/sup 3+/ ions ...