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This article is cited in 3 scientific papers (total in 3 papers)
Lasers, active media
Quantum cascade laser with bound-to-quasi-continuum optical transitions at a temperature of up to 371 K
I. S. Molodtsova, N. A. Raspopova, A. V. Lobintsovb, A. I. Danilovb, A. B. Krysac, I. I. Zasavitskiia a P. N. Lebedev Physical Institute of the Russian Academy of Sciences, Moscow
b Polyus Research and Development Institute named after M. F. Stel'makh, Moscow
c Department of Electronic and Electrical Engineering, University of Sheffield, UK
Abstract:
Based on a matched Ga0.47In0.53As/Al0.48In0.52As heteropair, we have developed a quantum cascade laser emitting at a wavelength of 7.4 μm. The chosen heterostructure with a relatively large number of quantum wells and barriers represents two mini-bands separated by a mini-gap with a localised doublet level near the upper mini-band, which provides a wide emission band (~100 cm-1). In a pulse regime, the maximal laser operation temperature is 371 K. Such a high temperature is explained by two factors: a large energy of the transfer from the doublet to the upper mini-band and a large volt defect. The characteristic temperatures T0 are found, which are equal to 170 K for low (less than 300 K) temperatures and 270 K for the range of 300 – 370 K. In addition, optical cavity losses are determined to be 2.5 and 7.7 cm-1 at temperatures of 80 and 254 K, respectively. The pulse power is 0.3 W at 80 K and 0.05 W at 293 K.
Keywords:
quantum cascade laser, quantum well, potential barrier, superlattice, mini-band, doublet, continuum, MOVPE technique.
Received: 02.03.2020 Revised: 27.05.2020
Citation:
I. S. Molodtsov, N. A. Raspopov, A. V. Lobintsov, A. I. Danilov, A. B. Krysa, I. I. Zasavitskii, “Quantum cascade laser with bound-to-quasi-continuum optical transitions at a temperature of up to 371 K”, Kvantovaya Elektronika, 50:8 (2020), 710–713 [Quantum Electron., 50:8 (2020), 710–713]
Linking options:
https://www.mathnet.ru/eng/qe17301 https://www.mathnet.ru/eng/qe/v50/i8/p710
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