Mid-infrared absorption by short-period InAs/GaSb type II superlattices |
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| Authors: | LL Li W Xu Z Zeng AR Wright C Zhang J Zhang YL Shi |
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| Affiliation: | 1. Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China;2. Department of Physics, Yunnan University, Kunming 650091, China;3. School of Engineering Physics, University of Wollongong, Wollongong, NSW 2522, Australia;4. Kunming Institute of Physics, Kunming, China |
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| Abstract: | 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. |
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