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Optically detected cyclotron resonance is used for the identification of recombination transitions of two-dimensional electron gas in A1GaAs/GaAs heterostructures. Two photoluminescence emissions are attributed to the recombination of the two-dimensional electron gas. These are the so-called H-band and the Fermi level singularity photoluminescence. Optical detection of cyclotron resonance is related...
Valence-band structures, hole effective masses and optical gain have been calculated for strained-layer quantum-well laser structures. Results show a logarithmic relation between the peak optical gain and carrier concentration for all possible material compositions of the quaternary system.
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