Purcell effect and beaming of emission in hybrid algaas nanowires with gaas quantum dots

Rodion R. Reznik; George E. Cirlin; Konstantin P. Kotlyar; Igor V. Ilkiv; Nika Akopian; Lorenzo Leandro; Valentin V. Nikolaev; Alexey V. Belonovski; Mikhail A. Kaliteevski

doi:10.3390/nano11112894

Purcell effect and beaming of emission in hybrid algaas nanowires with gaas quantum dots

Rodion R. Reznik^*, George E. Cirlin, Konstantin P. Kotlyar, Igor V. Ilkiv, Nika Akopian, Lorenzo Leandro, Valentin V. Nikolaev, Alexey V. Belonovski, Mikhail A. Kaliteevski

^*Corresponding author for this work

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Abstract

Control of directionality of emissions is an important task for the realization of novel nanophotonic devices based on nanowires. Most of the existing approaches providing high directionality of the light emitted from nanowires are based on the utilization of the tapered shape of nanowires, serving as nanoantenna coupling with the light waveguided in nanowire and the directional output beam. Here we report the beaming of the emitted light with wavelength near 800 nm by naturally formed core-shell AlGaAs NW with multiply GaAs quantum dots (QDs) diameter 30 nm and height 10 nm, while the diameter of NW 130 nm, what does not support efficient emission into waveguided modes, including the mode HE₁₁ . Experimental measurements show that intensity of emission for directions in the vicinity of the axis of NW is about two orders of magnitude higher than for perpendicular directions. The developed theoretical approach allowed us to calculate the probability of spontaneous emission for various directions and into waveguided modes and showed that highly directional radiation can be provided by the intrinsic emission properties of cylindrical NW. Our results suggest that for the small diameter of NW, directional emissions are associated with an TM₀ leaky mode (when electric field oriented in axial direction) and therefore manifests in an existence of axial electric dipole transitions in quantum dots.

Original language	English
Article number	2894
Journal	Nanomaterials
Volume	11
Issue number	11
Number of pages	9
ISSN	2079-4991
DOIs	https://doi.org/10.3390/nano11112894
Publication status	Published - Nov 2021

Bibliographical note

Funding Information:
Funding: The authors acknowledge support from the Ministry of Science and Higher Education of the Russian Federation (075-15-2021-993). Optical properties of grown samples by micro-PL method were studied under financial support of Villum Fonden (Project no. VKR023444). Theoretical part of the work was done under support of Russian Science Foundation grant 21-12-00304.

Publisher Copyright:
© 2021 by the authors. Licensee MDPI, Basel, Switzerland.

Keywords

Directionality of emission
Micro photoluminescence
Molecular beam epitaxy
Nanowire
Purcell factor
Quantum dot
Waveguide modes

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title = "Purcell effect and beaming of emission in hybrid algaas nanowires with gaas quantum dots",

abstract = "Control of directionality of emissions is an important task for the realization of novel nanophotonic devices based on nanowires. Most of the existing approaches providing high directionality of the light emitted from nanowires are based on the utilization of the tapered shape of nanowires, serving as nanoantenna coupling with the light waveguided in nanowire and the directional output beam. Here we report the beaming of the emitted light with wavelength near 800 nm by naturally formed core-shell AlGaAs NW with multiply GaAs quantum dots (QDs) diameter 30 nm and height 10 nm, while the diameter of NW 130 nm, what does not support efficient emission into waveguided modes, including the mode HE11 . Experimental measurements show that intensity of emission for directions in the vicinity of the axis of NW is about two orders of magnitude higher than for perpendicular directions. The developed theoretical approach allowed us to calculate the probability of spontaneous emission for various directions and into waveguided modes and showed that highly directional radiation can be provided by the intrinsic emission properties of cylindrical NW. Our results suggest that for the small diameter of NW, directional emissions are associated with an TM0 leaky mode (when electric field oriented in axial direction) and therefore manifests in an existence of axial electric dipole transitions in quantum dots.",

keywords = "Directionality of emission, Micro photoluminescence, Molecular beam epitaxy, Nanowire, Purcell factor, Quantum dot, Waveguide modes",

author = "Reznik, {Rodion R.} and Cirlin, {George E.} and Kotlyar, {Konstantin P.} and Ilkiv, {Igor V.} and Nika Akopian and Lorenzo Leandro and Nikolaev, {Valentin V.} and Belonovski, {Alexey V.} and Kaliteevski, {Mikhail A.}",

note = "Funding Information: Funding: The authors acknowledge support from the Ministry of Science and Higher Education of the Russian Federation (075-15-2021-993). Optical properties of grown samples by micro-PL method were studied under financial support of Villum Fonden (Project no. VKR023444). Theoretical part of the work was done under support of Russian Science Foundation grant 21-12-00304. Publisher Copyright: {\textcopyright} 2021 by the authors. Licensee MDPI, Basel, Switzerland.",

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AU - Reznik, Rodion R.

AU - Cirlin, George E.

AU - Kotlyar, Konstantin P.

AU - Ilkiv, Igor V.

AU - Akopian, Nika

AU - Leandro, Lorenzo

AU - Nikolaev, Valentin V.

AU - Belonovski, Alexey V.

AU - Kaliteevski, Mikhail A.

N1 - Funding Information: Funding: The authors acknowledge support from the Ministry of Science and Higher Education of the Russian Federation (075-15-2021-993). Optical properties of grown samples by micro-PL method were studied under financial support of Villum Fonden (Project no. VKR023444). Theoretical part of the work was done under support of Russian Science Foundation grant 21-12-00304. Publisher Copyright: © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

PY - 2021/11

Y1 - 2021/11

N2 - Control of directionality of emissions is an important task for the realization of novel nanophotonic devices based on nanowires. Most of the existing approaches providing high directionality of the light emitted from nanowires are based on the utilization of the tapered shape of nanowires, serving as nanoantenna coupling with the light waveguided in nanowire and the directional output beam. Here we report the beaming of the emitted light with wavelength near 800 nm by naturally formed core-shell AlGaAs NW with multiply GaAs quantum dots (QDs) diameter 30 nm and height 10 nm, while the diameter of NW 130 nm, what does not support efficient emission into waveguided modes, including the mode HE11 . Experimental measurements show that intensity of emission for directions in the vicinity of the axis of NW is about two orders of magnitude higher than for perpendicular directions. The developed theoretical approach allowed us to calculate the probability of spontaneous emission for various directions and into waveguided modes and showed that highly directional radiation can be provided by the intrinsic emission properties of cylindrical NW. Our results suggest that for the small diameter of NW, directional emissions are associated with an TM0 leaky mode (when electric field oriented in axial direction) and therefore manifests in an existence of axial electric dipole transitions in quantum dots.

AB - Control of directionality of emissions is an important task for the realization of novel nanophotonic devices based on nanowires. Most of the existing approaches providing high directionality of the light emitted from nanowires are based on the utilization of the tapered shape of nanowires, serving as nanoantenna coupling with the light waveguided in nanowire and the directional output beam. Here we report the beaming of the emitted light with wavelength near 800 nm by naturally formed core-shell AlGaAs NW with multiply GaAs quantum dots (QDs) diameter 30 nm and height 10 nm, while the diameter of NW 130 nm, what does not support efficient emission into waveguided modes, including the mode HE11 . Experimental measurements show that intensity of emission for directions in the vicinity of the axis of NW is about two orders of magnitude higher than for perpendicular directions. The developed theoretical approach allowed us to calculate the probability of spontaneous emission for various directions and into waveguided modes and showed that highly directional radiation can be provided by the intrinsic emission properties of cylindrical NW. Our results suggest that for the small diameter of NW, directional emissions are associated with an TM0 leaky mode (when electric field oriented in axial direction) and therefore manifests in an existence of axial electric dipole transitions in quantum dots.

KW - Directionality of emission

KW - Micro photoluminescence

KW - Molecular beam epitaxy

KW - Nanowire

KW - Purcell factor

KW - Quantum dot

KW - Waveguide modes

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DO - 10.3390/nano11112894

M3 - Journal article

C2 - 34835659

AN - SCOPUS:85118125558

SN - 2079-4991

VL - 11

JO - Nanomaterials

JF - Nanomaterials

IS - 11

M1 - 2894

ER -

Purcell effect and beaming of emission in hybrid algaas nanowires with gaas quantum dots

Abstract

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