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R. Reeder, Z. Ikonic, P. Harrison, A. Udal and E. Velmere, “Laterally Pumped GaAs/AlGaAs Quantum Wells as Sources of Broad Band Terahertz Radiation,” Journal of Applied Physics, Vol. 102, No. 7, 2007, Article ID: 073715. doi:10.1063/1.2783779

has been cited by the following article:

• TITLE: Thz Radiation under Tunneling in Asymmetric Double Quatum Wells

  AUTHORS: Menberu Mengesha, Svetlana Koshvaya, Vadim Mal’nev

  KEYWORDS: Double Quantum Well, Energy Splitting, Tunneling, Quantum Transitions

  JOURNAL NAME: Journal of Electromagnetic Analysis and Applications, Vol.3 No.7, July 19, 2011

  ABSTRACT: The asymmetric parabolic double quantum wells (DQWs) with resonant levels (the ground state energy in one well co-incides with the first excited state energy in another well) is analyzed. The splitting of these levels and the tunneling times are calculated. If the typical life time of the excited state is much smaller than the tunneling time between wells, the charged particle can radiate as a result of the quantum transition from the excited state to the ground state. In the opposite case, the asymmetric DQWs can be treated as a metastable excited nanosystem regardless of that the dipole transition from the excited state to ground state is permitted. The lifetime of this metastable state can be considerably reduced by putting it into a resonant cavity. The possibility of coherent radiation of an ensemble of asymmetric DQWS is discussed.