Intersubband absorption due to scattering on ionized impurities and acoustic phonons in parabolic quantum well

3rd International Symposium "Optics and its Applications"

Gevorgyan, A.H.^1 ; Kazaryan, E.M.^1 ; Kostanyan, A.A.^1

Institute of Mathematics and High Technologies, Russian-Armenian University, 123 Hovsep Emin Street, Yerevan

0051, Armenia^1

关键词: Absorption co-efficient;    Acoustic phonons;    GaAs quantum wells;    Intersubband absorption;    Ionized impurities;    Linewidth dependence;    Parabolic quantum wells;    Transport mobility;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/673/1/012016/pdf
DOI  :  10.1088/1742-6596/673/1/012016

来源: IOP

【 摘 要 】

Intersubband absorption linewidth in GaAs quantum well due to scattering by LA phonons and ionized impurities is calculated. The method which used for calculations is similar to a well-known method for calculating transport mobility. The linewidth dependence on temperature, as well as on well width is presented. The estimation for absorption coefficient is proposed, based on two-dimensional dynamical conductivity expression. The coefficient is calculated for different well widths, as well as for different temperatures.