Optical properties of open multi-cascade nanostructure as an element of quantum cascade detector

Julia Seti; Evgenia Vereshko; Oxana Voitsekhivska; Mykola Tkach

doi:10.1117/12.3013074

5 January 2024 Optical properties of open multi-cascade nanostructure as an element of quantum cascade detector

Julia Seti, Evgenia Vereshko, Oxana Voitsekhivska, Mykola Tkach

Proceedings Volume 12938, Sixteenth International Conference on Correlation Optics; 129381G (2024) https://doi.org/10.1117/12.3013074
Event: International Conference Correlation Optics (COR 2023), 2023, Chernivtsi, Ukraine

Abstract

Using the transfer matrix method within the effective mass approximation and rectangular potentials model, the accurate analytical expression for the scattering S-matrix in an open multi-cascade resonant tunnel nanostructure was obtained. It made possible to develop the theory of spectral characteristics of quasi-stationary electron states in a multi-cascade element of a quantum cascade detector. Using the example of a nanostructure with GaAs wells and AlGaAs barriers, the peculiarities of the dependences of resonance energies and resonance widths of electron states on the number of cascades were investigated. It was established that in the N-cascade structure, the resonance bands are observed in spectrum, each of which is formed by the energies of N quasi-stationary states. If the number of cascades increases in the interval of small values, the widths of the energy bands become bigger and almost do not change at N≥20.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Julia Seti, Evgenia Vereshko, Oxana Voitsekhivska, and Mykola Tkach "Optical properties of open multi-cascade nanostructure as an element of quantum cascade detector", Proc. SPIE 12938, Sixteenth International Conference on Correlation Optics, 129381G (5 January 2024); https://doi.org/10.1117/12.3013074

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