منابع مشابه
Quantum dot cascade laser
UNLABELLED We demonstrated an unambiguous quantum dot cascade laser based on InGaAs/GaAs/InAs/InAlAs heterostructure by making use of self-assembled quantum dots in the Stranski-Krastanow growth mode and two-step strain compensation active region design. The prototype generates stimulated emission at λ ~ 6.15 μm and a broad electroluminescence band with full width at half maximum over 3 μm. The...
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In the mid-infrared spectral region, where continuous wave room temperature operation of the QCL devices was achieved in the previous phase of the program, the main goal will be to further broaden the frequency range over which these high performances are achieved. Another important topic is the fabrication of devices with a very large frequency tuning capability, which will enable the spectros...
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We propose a quantum-dot version of the quantumwell cascade laser of Faist et al. The elimination of single phonon decays by the three-dimensional confinement implies a several order-of-magnitude reduction in the threshold current. The requirements on dot size (10–20 nm) and on dot density and uniformity [one coupled pair of dots per (200 nm3) with 5% nonuniformity] are close to current technol...
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We propose a quantum-dot version of the quantum-well cascade laser of Faist et al. [Science 264, 553 (1994)]. The elimination of single phonon decays by the three-dimensional confinement implies a several-order-of-magnitude reduction in the threshold current. The requirements on dot size (10-20nm) and on dot density and uniformity [one coupled pair of dots per (180nm) with 5% nonuniformity] are...
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ژورنال
عنوان ژورنال: Nanoscale Research Letters
سال: 2014
ISSN: 1556-276X
DOI: 10.1186/1556-276x-9-144