作者: Y N Qiu , H D Sun , J M Rorison , S Calvez , M D Dawson
DOI: 10.1088/0268-1242/23/9/095010
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摘要: The effect of quantum-well intermixing on the material gain a GaInNAs/GaAs laser is investigated theoretically. diffusion gallium and indium atoms in intermixed sample assumed their compositional profiles are modelled using Fick's law. band-anti-crossing model used to calculate band structure GaInNAs quantum well, which appropriate for this non-randomly-alloyed system. calculated results show good agreement with observed photoluminescence excitation both non-intermixed samples, confirms model. It found that strain gradient, variation gap degeneracy between heavy light holes main factors determining quantized energy levels well. With increase length, differential decrease due conduction effective mass rapid dipole moments. These characteristics effects will be useful design integrated photonic devices based material.