Electron-phonon relaxation rates and optical gain in a quantum cascade laser in a magnetic field

Article English OPEN
Radovanovic, J. ; Milanovic, V. ; Ikonic, Z. ; Indjin, D. ; Harrison, P. (2005)
  • Publisher: American Institute of Physics

We present a model for calculating the optical gain in a midinfrared GaAs/AlGaAs quantum cascade laser in a magnetic field, based on solving the set of rate equations that describe the carrier density in each level, accounting for the optical- and acoustic-phonon scattering processes. The confinement caused by the magnetic field strongly modifies the lifetimes of electrons in the excited state and results in pronounced oscillations of the optical gain as a function of the field. Numerical results are presented for the structure designed to emit at lambda~11.4 µm, with the magnetic field varying in the range of 10–60 T. The effects of band nonparabolicity are also included. © 2005 American Institute of Physics.
  • References (15)
    15 references, page 1 of 2

    1C. Sirtori, P. Kruck, S. Barbieri, P. Collot, J. Nagle, M. Beck, J. Faist, and U. Oesterle, Appl. Phys. Lett. 73, 3486 s1998d.

    2P. Kruck, H. Page, C. Sirtori, S. Barbieri, M. Stellmacher, and J. Nagle, Appl. Phys. Lett. 76, 3340 s2000d.

    3H. Page, C. Becker, A. Robertson, G. Glastre, V. Ortiz, and C. Sirtori, Appl. Phys. Lett. 78, 3529 s2001d.

    4T. Chakraborty and V. Apalkov, Adv. Phys. 52, 455 s2003d.

    5D. Smirnov, O. Drachenko, J. Leotin, H. Page, C. Becker, C. Sirtori, V.

    Apalkov, and T. Chakraborty, Phys. Rev. B 66, 125317 s2002d.

    6D. Smirnov, C. Becker, O. Drachenko, V. V. Rylkov, H. Page, J. Leotin, and C. Sirtori, Phys. Rev. B 66, 121305 s2002d.

    7C. Becker, C. Sirtori, O. Drachenko, V. Rylkov, D. Smirnov, and J. Leotin, Appl. Phys. Lett. 81, 2941 s2002d.

    8J. Alton et al., Phys. Rev. B 68, 081303 s2003d.

    9S. Živanović, V. Milanović, and Z. Ikonić, Phys. Rev. B 52, 8305 s1995d.

  • Metrics
    No metrics available
Share - Bookmark