OPTICALLY DETECTED CYCLOTRON-RESONANCE ON GAAS ALXGA1-XAS QUANTUM-WELLS AND QUANTUM WIRES/

GaAs/GaxAl1-xAs quantum wells and quantum wires were studied by microw ave modulation of the photoluminescence (MMPL) and optically detected cyclotron resonance (ODCR). It is shown that the MMPL signal is enhanc ed under cyclotron resonance conditions of the electrons. The energy t ransfer to the luminescence is thermal by heating the crystal lattice. The ODCR experiments allowed us to determine selectively the effectiv e masses and mobilities of electrons confined in an 80-Angstrom quantu m well, in nominally 80-nm-wide quantum wires prepared by a shallow et ching technique structuring the 80-Angstrom quantum well, and an inver sion channel formed at a superlattice/buffer layer interface.