Abstract
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We present a theoretical study on optical properties of short-period InAs/GaSb type-II superlattices
(SLs) which can serve for mid-infrared (MIR) detection. The miniband structure of such SLs is calculated
using the Kronig-Penney model. On the basis of the energy-balance equation derived from the
Boltzmann equation we calculate the optical absorption coefficient. The obtained results agree with
recent experimental findings. Moreover, the dependence of the MIR absorption in InAs/GaSb type-II SLs
on temperature and well-widths are examined.