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Anisotropic Radiation in Heterostructured "Emitter in a Cavity" Nanowire.

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Title: Anisotropic Radiation in Heterostructured "Emitter in a Cavity" Nanowire.
Authors: Kuznetsov, Alexey1 (AUTHOR) alkuznetsov1998@gmail.com, Roy, Prithu2 (AUTHOR) prithu.roy@fresnel.fr, Kondratev, Valeriy M.1 (AUTHOR) kvm_96@mail.ru, Fedorov, Vladimir V.1,3 (AUTHOR) burunduk.uk@gmail.com, Kotlyar, Konstantin P.1,4 (AUTHOR) konstantin21kt@gmail.com, Reznik, Rodion R.1 (AUTHOR) moment92@mail.ru, Vorobyev, Alexander A.1 (AUTHOR) alex.spbau@mail.ru, Mukhin, Ivan S.1,2,3 (AUTHOR) imukhin@yandex.ru, Cirlin, George E.1 (AUTHOR) george.cirlin@mail.ru, Bolshakov, Alexey D.1,5 (AUTHOR) bolshakov@live.com
Source: Nanomaterials (2079-4991). Jan2022, Vol. 12 Issue 2, p241-241. 1p.
Subjects: Semiconductor nanowires, Nanowires, Fabry-Perot resonators, Radiation, Refractive index, Numerical calculations, Photoluminescence
Abstract: 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. [ABSTRACT FROM AUTHOR]
Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Anisotropic Radiation in Heterostructured "Emitter in a Cavity" Nanowire.
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  Data: <searchLink fieldCode="AR" term="%22Kuznetsov%2C+Alexey%22">Kuznetsov, Alexey</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> alkuznetsov1998@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Roy%2C+Prithu%22">Roy, Prithu</searchLink><relatesTo>2</relatesTo> (AUTHOR)<i> prithu.roy@fresnel.fr</i><br /><searchLink fieldCode="AR" term="%22Kondratev%2C+Valeriy+M%2E%22">Kondratev, Valeriy M.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> kvm_96@mail.ru</i><br /><searchLink fieldCode="AR" term="%22Fedorov%2C+Vladimir+V%2E%22">Fedorov, Vladimir V.</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<i> burunduk.uk@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Kotlyar%2C+Konstantin+P%2E%22">Kotlyar, Konstantin P.</searchLink><relatesTo>1,4</relatesTo> (AUTHOR)<i> konstantin21kt@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Reznik%2C+Rodion+R%2E%22">Reznik, Rodion R.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> moment92@mail.ru</i><br /><searchLink fieldCode="AR" term="%22Vorobyev%2C+Alexander+A%2E%22">Vorobyev, Alexander A.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> alex.spbau@mail.ru</i><br /><searchLink fieldCode="AR" term="%22Mukhin%2C+Ivan+S%2E%22">Mukhin, Ivan S.</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<i> imukhin@yandex.ru</i><br /><searchLink fieldCode="AR" term="%22Cirlin%2C+George+E%2E%22">Cirlin, George E.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> george.cirlin@mail.ru</i><br /><searchLink fieldCode="AR" term="%22Bolshakov%2C+Alexey+D%2E%22">Bolshakov, Alexey D.</searchLink><relatesTo>1,5</relatesTo> (AUTHOR)<i> bolshakov@live.com</i>
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  Data: <searchLink fieldCode="JN" term="%22Nanomaterials+%282079-4991%29%22">Nanomaterials (2079-4991)</searchLink>. Jan2022, Vol. 12 Issue 2, p241-241. 1p.
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  Data: <searchLink fieldCode="DE" term="%22Semiconductor+nanowires%22">Semiconductor nanowires</searchLink><br /><searchLink fieldCode="DE" term="%22Nanowires%22">Nanowires</searchLink><br /><searchLink fieldCode="DE" term="%22Fabry-Perot+resonators%22">Fabry-Perot resonators</searchLink><br /><searchLink fieldCode="DE" term="%22Radiation%22">Radiation</searchLink><br /><searchLink fieldCode="DE" term="%22Refractive+index%22">Refractive index</searchLink><br /><searchLink fieldCode="DE" term="%22Numerical+calculations%22">Numerical calculations</searchLink><br /><searchLink fieldCode="DE" term="%22Photoluminescence%22">Photoluminescence</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: 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. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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      – Type: doi
        Value: 10.3390/nano12020241
    Languages:
      – Code: eng
        Text: English
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        PageCount: 1
        StartPage: 241
    Subjects:
      – SubjectFull: Semiconductor nanowires
        Type: general
      – SubjectFull: Nanowires
        Type: general
      – SubjectFull: Fabry-Perot resonators
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      – SubjectFull: Radiation
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      – SubjectFull: Refractive index
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      – SubjectFull: Numerical calculations
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      – SubjectFull: Photoluminescence
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              Text: Jan2022
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