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Information × Registration Number 0212U008331, 0110U000189 , R & D reports Title Theory of electromagnetic radiation of quantum cascade lasers as a result of the electrons transitions between the quasistationary states in the resonance-tunneling structures popup.stage_title Head Tkach Mykola Vasilovych, Registration Date 09-01-2013 Organization Yuri Fedkovych Chernivtsi National University popup.description2 In the model of rectangular potentials and different effective the masses of electron in different elements the two barrier resonance-tunnel structure the developed theory of active conductivity of electrons of opened and closed resonance tunnelling structure (RTS) taking into account interaction of electrons with the high-frequency electromagnetic field. On an example experimentally realized RTS it is shown with the two barrier active area of separate cascade, that only the model of the complete opened cascade allows the optimisied geometrical design of active area reliably, and to describe tunelling physical processes of the electrons. The developed theory of active conductivity of electrons three barrier resonance-tunnel structure in the permanent electric field. The obtained dependence on tension of the magnetic field of resonance energies and resonance widths electronic quasistationary states, and also the analysed negative active dynamic conductivity of RTS is first calculated as models of active area and separate cascade of the quantum cascade laser (QCL). Relative integral intensity of laser radiation is first calculated depending on tension of the magnetic field. It is shown, that the magnetic field negatively affects work RTS, destroys the working quasistationary states of electron in an active area QCL, and diminishes the active dynamic conductivity in a direct electronic stream. Product Description popup.authors Cеті Юлія Олександрівна Войцехівська Оксана Миколаївна Головацький Володимир Анатолійович Маханець Олександр Михайлович Ткач Микола Васильович popup.nrat_date 2020-04-02 Close