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Study of methods for lowering the lasing frequency of a terahertz quantum-cascade laser based on two quantum wells

  • XVI Symposium “nanophysics and Nanoelectronics”, Nizhni Novgorod, March 12–16, 2012
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Abstract

Two mechanisms for achieving lower terahertz-range frequencies in quantum-cascade structures with two quantum wells based on GaAs/AlGaAs compounds are proposed. The first mechanism is based on the introduction of composite quantum wells consisting of a narrow (∼2 nm) quantum well with a low potential barrier, being within the main wide quantum well. The second mechanism is based on barriers with unequal heights, arranged in front of and behind the composite quantum well. Optimized quantum-cascade laser structures emitting in the regions of ∼2.15 and ∼1.35 THz are calculated.

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Authors and Affiliations

  1. Belarussian State University, pr. Nezavisimosti 4, Minsk, 220030, Belarus

    D. V. Ushakov

  2. Lebedev Physical Institute, Russian Academy of Sciences, Leninskii pr. 53, Moscow, 119991, Russia

    Yu. G. Sadofyev

  3. Trion Technology, Tempe, AZ, 85281, USA

    N. Samal

Authors
  1. D. V. Ushakov
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  2. Yu. G. Sadofyev
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  3. N. Samal
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Correspondence to D. V. Ushakov.

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Original Russian Text © D.V. Ushakov, Yu.G. Sadofyev, N. Samal, 2012, published in Fizika i Tekhnika Poluprovodnikov, 2012, Vol. 46, No. 11, pp. 1430–1434.

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Ushakov, D.V., Sadofyev, Y.G. & Samal, N. Study of methods for lowering the lasing frequency of a terahertz quantum-cascade laser based on two quantum wells. Semiconductors 46, 1402–1406 (2012). https://doi.org/10.1134/S106378261211022X

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  • DOI: https://doi.org/10.1134/S106378261211022X

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