Browsing by Author "Zhukov, Alexey E."

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    Lasers with asymmetric barrier layers: A promising type of injection lasers
    Asryan, Levon V.; Zubov, Fedor I.; Kryzhanovskaya, Natalia V.; Maximov, Mikhail V.; Zhukov, Alexey E. (2016-08)
    We present an overview of our theoretical and experimental work on a novel type of semiconductor lasers – quantum well (QW) lasers with asymmetric barrier layers (ABLs). Our experimental work supports our theoretical derivations — ABL QW lasers demonstrate superior operating characteristics as compared to conventional QW lasers. In particular, the threshold current is lower and more temperature-stable, the light-current characteristic is more linear, and the wall-plug efficiency is higher in ABL lasers.
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    Light-current characteristic of a quantum well laser with asymmetric barrier layers
    Asryan, Levon V.; Kryzhanovskaya, Natalia V.; Maximov, Mikhail V.; Zubov, Fedor I.; Zhukov, Alexey E. (American Institute of Physics, 2013-10-14)
    Light-current characteristic (LCC) of a novel type of quantum well (QW) lasers-QW lasers with asymmetric barrier layers (ABLs)-is studied. The ABLs (one on each side of the QW) prevent electrons from entering the hole-injecting side of the structure and holes from entering the electron-injecting side. The use of ABLs thus suppresses the parasitic electron-hole recombination outside the QW and eliminates the mechanism of sublinearity of the LCC in conventional lasers associated with this recombination and with the carrier capture delay into the QW. As a result, no matter how slow is the carrier capture into the QW, the LCC of an ABL QW laser is virtually linear. In an ABL laser containing indent layers between the QW and each of the ABLs (parasitic recombination still occurs in these thin layers), even in the case of slow capture of carriers into the QW, the LCC is also considerably more linear than in a reference conventional QW laser. (C) 2013 AIP Publishing LLC.