THE EFFECTIVE MASSES IN STRAINED INGAAS INP QUANTUM-WELLS DEDUCED FROM MAGNETOEXCITATION SPECTROSCOPY/

The reduced effective masses in InxGa1-xAs/InP quantum wells have been determined as a function of strain (x value) and well width by means of magneto-optical methods. Magnetoexcitons have been observed in phot oluminescence excitation spectra in the presence of a magnetic field. At higher magnetic fields, the observed magnetoexcitons will asymptoti cally approach the free Landau levels. From a least square fit, the de pendence of the reduced effective masses on strain and well width has been deduced. Also, the reduced effective mass including the light hol e state has been determined for the tensile strained quantum well stru cture. (C) 1997 American Institute of Physics.