Phonon-sideband MO-CVD quantum-well AlxGa1−xAs-GaAs heterostructure laser

Abstract
Laser operation (4.2–300 °K) of multiple‐quantum‐well AlxGa1−xAs‐GaAs heterostructures on a phonon (LO) sideband ∼36 meV below the lowest confined‐particle transitions is described. Phonon‐sideband laser data are presented on two different metalorganic chemical‐vapor‐deposited (MO‐CVD) quantum‐well heterostructures with four GaAs active regions (Lz∼50 and ∼90 Å) coupled by three AlxGa1−xAs (x∼0.35) barriers.