Optical Studies and Transmission Electron Microscopy of HgCdTe Quantum Well Heterostructures for Very Long Wavelength Lasers

Vladimir V Rumyantsev; Anna A Razova; Leonid S Bovkun; Dmitriy A Tatarskiy; Vladimir Y Mikhailovskii; Maksim S Zholudev; Anton V Ikonnikov; Tatyana A Uaman Svetikova; Kirill V Maremyanin; Vladimir V Utochkin; Mikhail A Fadeev; Vladimir G Remesnik; Vladimir Y Aleshkin; Nikolay N Mikhailov; Sergey A Dvoretsky; Marek Potemski; Milan Orlita; Vladimir I Gavrilenko; Sergey V Morozov

doi:10.3390/nano11071855

Optical Studies and Transmission Electron Microscopy of HgCdTe Quantum Well Heterostructures for Very Long Wavelength Lasers

Nanomaterials (Basel). 2021 Jul 19;11(7):1855. doi: 10.3390/nano11071855.

Authors

Vladimir V Rumyantsev^{1

2}, Anna A Razova^{1

2}, Leonid S Bovkun³, Dmitriy A Tatarskiy^{1

4}, Vladimir Y Mikhailovskii⁵, Maksim S Zholudev^{1

2}, Anton V Ikonnikov⁶, Tatyana A Uaman Svetikova⁶, Kirill V Maremyanin^{1

2}, Vladimir V Utochkin¹, Mikhail A Fadeev¹, Vladimir G Remesnik⁷, Vladimir Y Aleshkin^{1

8}, Nikolay N Mikhailov⁷, Sergey A Dvoretsky⁷, Marek Potemski³, Milan Orlita^{3

9}, Vladimir I Gavrilenko^{1

8}, Sergey V Morozov^{1

2}

Affiliations

¹ Institute for Physics of Microstructures of RAS, 603950 Nizhny Novgorod, Russia.
² Faculty of Radiophysics, Lobachevsky State University, 603950 Nizhny Novgorod, Russia.
³ LNCMI-EMFL, CNRS UPR3228, University Grenoble Alpes, University Toulouse, University Toulouse 3, INSA-T, 38042 Grenoble, France.
⁴ Faculty of Physics, Lobachevsky State University, 603950 Nizhny Novgorod, Russia.
⁵ Resource Center for Nanotechnology, Saint-Petersburg University, 199034 Saint-Petersburg, Russia.
⁶ Faculty of Physics, Lomonosov Moscow State University, 119991 Moscow, Russia.
⁷ Rzhanov Institute of Semiconductor Physics, Siberian Branch, Russian Academy of Sciences, 630090 Novosibirsk, Russia.
⁸ Advanced School of General and Applied Physics, Lobachevsky State University, 603950 Nizhny Novgorod, Russia.
⁹ Faculty of Mathematics and Physics, Institute of Physics, Charles University, KeKarlovu 5, 121 16 Prague 2, Czech Republic.

Abstract

HgTe/CdHgTe quantum well (QW) heterostructures have attracted a lot of interest recently due to insights they provided towards the physics of topological insulators and massless Dirac fermions. Our work focuses on HgCdTe QWs with the energy spectrum close to the graphene-like relativistic dispersion that is supposed to suppress the non-radiative Auger recombination. We combine various methods such as photoconductivity, photoluminescence and magneto-optical measurements as well as transmission electron microscopy to retrofit growth parameters in multi-QW waveguide structures, designed for long wavelengths lasing in the range of 10-22 μm. The results reveal that the attainable operating temperatures and wavelengths are strongly dependent on Cd content in the QW, since it alters the dominating recombination mechanism of the carriers.

Keywords: HgCdTe; heterostructures; stimulated emission.

Abstract

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