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Lasing without population inversion in a four-level Y-type configuration in double quantum dot system

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Abstract

This work discusses lasing without inversion in Y-scheme in a double quantum dot nanostructure. This new type of lasing, which results from the quantum interference of spontaneous emission components, was not discussed earlier in quantum dot nanostructures. It is found that both pumping and cycling fields control the laser emission. The decrease of the cycling detuning increases the possibility of lasing. Probe detuning controls the width of the absorption bath (electromagnetic-induced transparency window) of this structure. This phenomenon can have an interesting application for developing sources of coherent radiation in a region of electromagnetic spectrum where the implementation of traditional laser schemes is difficult.

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Authors and Affiliations

  1. Science College, Misan University, Amarah, Misan, Iraq

    B Al-Nashy

  2. Nassiriya Nanotechnology Research Laboratory (NNRL), Science College, Thi-Qar University, Nassiriya, Dhi Qar, Iraq

    M Abdullah & Amin Habbeb Al-Khursan

  3. Physics Department, Science College, Thi-Qar University, Nassiriya, Dhi Qar, Iraq

    Ali Gehad Al-Shatravi

Authors
  1. B Al-Nashy
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  2. M Abdullah
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  3. Ali Gehad Al-Shatravi
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  4. Amin Habbeb Al-Khursan
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Corresponding author

Correspondence to B Al-Nashy.

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Al-Nashy, B., Abdullah, M., Al-Shatravi, A.G. et al. Lasing without population inversion in a four-level Y-type configuration in double quantum dot system. Pramana - J Phys 91, 74 (2018). https://doi.org/10.1007/s12043-018-1646-6

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  • DOI: https://doi.org/10.1007/s12043-018-1646-6

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