Nonresonant transparency channels of a two-barrier nanosystem in an electromagnetic field with an arbitrary strength

Tkach, N. V.; Seti, Ju. O.

doi:10.1134/s0021364012050074

Cited by 9 publications

(3 citation statements)

References 14 publications

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“…Фотон-супровідне тунелювання електро-нів крізь відкриту РТС у потужному електро-магнітному полі досліджено у роботах [8][9][10], де виявлено, що у результаті електрон-фото-нної взаємодії виникають принципово нові канали прозорості наносистеми. Однак, через складність математичного апарату у цитова-них роботах були досліджені лише особли-вості коефіцієнта прозорості наносистеми.…”

Section: вступunclassified

Role of Two-Photon Electronic Transitions in Operation of Quantum Cascade Lasers

Tkach¹,

Сеті²,

Boiko³

et al. 2014

SEMST

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Анотація. У наближенні ефективних мас та прямокутних потенціальних ям і бар'єрів для електрона на основі аналітично знайдених розв'язків повного рівняння Шредінгера розвинена теорія динамічної провідності трибар'єрної резонансно-тунельної наноструктури у слабкому електромагнітному полі з урахуванням двофотонних електронних переходів з різними частотами. Показано, що вклад двофотонних електронних переходів з випромінюванням електромагнітних хвиль у загальну величину динамічної провідності в оптимальних конфігураціях трибар'єрної наноструктури може досягати 40%.Ключові слова: резонансно-тунельна структура, квантовий лазер, квантовий детектор, динамiчна провiднiсть. ROLE OF TWO-PHOTON ELECTRONIC TRANSITIONS IN OPERATION OF QUANTUM CASCADE LASERS M. V. Tkach, Ju. O. Seti, I. V. Boyko, M. V. Pan'kivAbstract. The theory of dynamic conductivity of three-barrier resonant tunneling structure in weak electromagnetic field taking into account two-photon electronic transitions with different frequencies is developed within the approximation of effective mass and rectangular potential wells and barriers for the electron using the analytically obtained solutions of complete Schrodinger equation. It is shown that

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Section: вступunclassified

Role of Two-Photon Electronic Transitions in Operation of Quantum Cascade Lasers

Tkach¹,

Сеті²,

Boiko³

et al. 2014

SEMST

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“…The theoretical methods of the calculation of spectral parameters of RTS, being the elements of nano-devices, are presented in the book [32] and reviews [33,34]. The last achievements of the theory concerning the photonassisted transport in multilayered RTS are presented in reviews [35,36] and original papers [37,38].…”

Section: Introductionmentioning

confidence: 99%

Photon- and phonon-assisted transport of electrons in resonant tunneling structures

Tkach¹,

Seti²,

Voіtseкhіvsкa³

et al. 2017

J. Phys. Stud.

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The quantum mechanical theory of photon-and phonon assisted tunneling of electrons through the open multilayered nanostructures being the cascades of quantum cascade detector and quantum cascade laser is developed. The theory of electronic dynamic conductivity and spectral parameters (resonance energies and widths) of their quasi-stationary states is established within the effective mass approximation and models of rectangular and triangular potential profiles of resonant tunneling structure, respectively.It is shown that an open model of multilayered resonant tunneling structure, comparing with the closed one, adequately describes the physical processes in cascades and their elements (active regions, extractors, injectors) and, with respect to the experimental data, gives an opportunity to calculate and reveal their optimal geometrical design without any fitting parameters.

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“…BOYKO, 2016 netic waves) provide an effective method to optimize the operational parameters of QCLs and QCDs. One of the ways to enhance the output RTS current is the photon-assisted tunneling in a strong electromagnetic field [8,9], when new non-resonance channels of nanostructure transparency emerge [10,11]. The case of two-photon quantum transitions between quasistationary electronic states with the emission of photons with identical or different frequencies was studied in works [12,13] in the framework of rough models: -like potential barriers in RTSs and a common effective electron mass.…”

Section: Introductionmentioning

confidence: 99%

Role of Two-Photon Electronic Transitions in the Formation of Active Dynamic Conductivity in a Three-Barrier Resonance Tunneling Structure with an Applied DC Electric Field

Boyko¹

2016

Ukr. J. Phys.

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The theory of active dynamic conductivity in a three-barrier resonance tunneling structure subjected to the combined action of a weak electromagnetic field and a longitudinal dc electric field is developed with regard for the contribution of laser-induced one-and two-photon electronic transitions with different frequencies. For this purpose, the full Schrödinger equation is solved in the effective mass approximation and with the use of the model of rectangular potential wells and barriers for an electron. The maximum contribution of two-photon transitions to the formation of the total active dynamic conductivity in laser-induced transitions is shown not to exceed 38%. Geometric configurations of the resonance tunneling structure, for which the laser radiation intensity increases due to laser-induced two-photon electronic transitions, are determined. K e y w o r d s: resonance tunneling structure, quantum cascade laser, quantum cascade detector, active dynamic conductivity, two-photon electronic transition.

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Nonresonant transparency channels of a two-barrier nanosystem in an electromagnetic field with an arbitrary strength

Cited by 9 publications

References 14 publications

Role of Two-Photon Electronic Transitions in Operation of Quantum Cascade Lasers

Role of Two-Photon Electronic Transitions in Operation of Quantum Cascade Lasers

Photon- and phonon-assisted transport of electrons in resonant tunneling structures

Role of Two-Photon Electronic Transitions in the Formation of Active Dynamic Conductivity in a Three-Barrier Resonance Tunneling Structure with an Applied DC Electric Field

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