Optical and Quantum Electronics

, Volume 47, Issue 4, pp 865–872 | Cite as

Cubic GaN/AlGaN based quantum wells optimized for applications to tunable mid-infrared photodetectors

  • A. Radosavljević
  • J. Radovanović
  • V. Milanović
  • D. Indjin


We propose a method which delivers optimal cubic GaN/AlGaN quantum well profiles such that both the Stark effect and peak intersubband absorption from the ground to the first excited electronic state, in a prescribed range of bias electric fields, are maximized. Our method relies on the Genetic Algorithm which finds globally optimal structures with a predefined number of embedded layers. We investigate simple rectangular quantum wells with embedded step layers for applications in tunable mid-infrared photodetectors. The effects of band nonparabolicity are taken into account to refine our model.


Quantum well Stark effect Intersubband absorption  Tunable photodetectors Genetic algorithm 



The authors acknowledge support from MPNS COST ACTION MP1204 - TERA-MIR Radiation: Materials, Generation, Detection and Applications and BMBS COST Action BM1205 - European Network for Skin Cancer Detection using Laser Imaging, as well as the Ministry of Education, Science and Technological Development (Republic of Serbia), project III 45010.


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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  • A. Radosavljević
    • 1
    • 2
  • J. Radovanović
    • 1
  • V. Milanović
    • 1
  • D. Indjin
    • 3
  1. 1.School of Electrical EngineeringUniversity of BelgradeBelgradeSerbia
  2. 2.P* Group, Vinča Institute of Nuclear SciencesUniversity of BelgradeBelgradeSerbia
  3. 3.School of Electronic and Electrical EngineeringUniversity of LeedsLeedsUK

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