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Article

Anisotropic Radiation in Heterostructured “Emitter in a Cavity” Nanowire

1
Center for Nanotechnologies, Alferov University, Khlopina 8/3, 194021 Saint Petersburg, Russia
2
Department of Physics, ITMO University, Kronverkskii, 49, 197101 Saint Petersburg, Russia
3
Higher School of Engineering Physics, Peter the Great Saint Petersburg Polytechnic University, Politekhnicheskaya 29, 195251 Saint Petersburg, Russia
4
Institute for Analytical Instrumentation RAS, Ivana Chernykh, 31-33, lit. A, 198095 Saint Petersburg, Russia
5
Center for Photonics and 2D Materials, Moscow Institute of Physics and Technology, 9 Institutskiy Lane, 141701 Dolgoprudny, Russia
*
Author to whom correspondence should be addressed.
Academic Editor: Dezhen Shen
Nanomaterials 2022, 12(2), 241; https://doi.org/10.3390/nano12020241
Received: 30 November 2021 / Revised: 29 December 2021 / Accepted: 10 January 2022 / Published: 13 January 2022
(This article belongs to the Special Issue Semiconductor Hetero-Nanostructures for Opto-Electronics Applications)
Tailorable synthesis of axially heterostructured epitaxial nanowires (NWs) with a proper choice of materials allows for the fabrication of novel photonic devices, such as a nanoemitter in the resonant cavity. An example of the structure is a GaP nanowire with ternary GaPAs insertions in the form of nano-sized discs studied in this work. With the use of the micro-photoluminescence technique and numerical calculations, we experimentally and theoretically study photoluminescence emission in individual heterostructured NWs. Due to the high refractive index and near-zero absorption through the emission band, the photoluminescence signal tends to couple into the nanowire cavity acting as a Fabry–Perot resonator, while weak radiation propagating perpendicular to the nanowire axis is registered in the vicinity of each nano-sized disc. Thus, within the heterostructured nanowire, both amplitude and spectrally anisotropic photoluminescent signals can be achieved. Numerical modeling of the nanowire with insertions emitting in infrared demonstrates a decay in the emission directivity and simultaneous rise of the emitters coupling with an increase in the wavelength. The emergence of modulated and non-modulated radiation is discussed, and possible nanophotonic applications are considered. View Full-Text
Keywords: nanowire; nanodisc; GaP; GaPAs; infrared; photonics; emitter; cavity; waveguide nanowire; nanodisc; GaP; GaPAs; infrared; photonics; emitter; cavity; waveguide
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MDPI and ACS Style

Kuznetsov, A.; Roy, P.; Kondratev, V.M.; Fedorov, V.V.; Kotlyar, K.P.; Reznik, R.R.; Vorobyev, A.A.; Mukhin, I.S.; Cirlin, G.E.; Bolshakov, A.D. Anisotropic Radiation in Heterostructured “Emitter in a Cavity” Nanowire. Nanomaterials 2022, 12, 241. https://doi.org/10.3390/nano12020241

AMA Style

Kuznetsov A, Roy P, Kondratev VM, Fedorov VV, Kotlyar KP, Reznik RR, Vorobyev AA, Mukhin IS, Cirlin GE, Bolshakov AD. Anisotropic Radiation in Heterostructured “Emitter in a Cavity” Nanowire. Nanomaterials. 2022; 12(2):241. https://doi.org/10.3390/nano12020241

Chicago/Turabian Style

Kuznetsov, Alexey, Prithu Roy, Valeriy M. Kondratev, Vladimir V. Fedorov, Konstantin P. Kotlyar, Rodion R. Reznik, Alexander A. Vorobyev, Ivan S. Mukhin, George E. Cirlin, and Alexey D. Bolshakov. 2022. "Anisotropic Radiation in Heterostructured “Emitter in a Cavity” Nanowire" Nanomaterials 12, no. 2: 241. https://doi.org/10.3390/nano12020241

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