Silicon Mie resonators for highly directional light emission from monolayer MoS2

A.F. Cihan, A.G. Curto, S. Raza, P.G. Kik, M.L. Brongersma

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

Controlling light emission from quantum emitters has important applications, ranging from solid-state lighting and displays to nanoscale single-photon sources. Optical antennas have emerged as promising tools to achieve such control right at the location of the emitter, without the need for bulky, external optics. Semiconductor nanoantennas are particularly practical for this purpose because simple geometries such as wires and spheres support multiple, degenerate optical resonances. Here, we start by modifying Mie scattering theory developed for plane wave illumination to describe scattering of dipole emission. We then use this theory and experiments to demonstrate several pathways to achieve control over the directionality, polarization state and spectral emission that rely on a coherent coupling of an emitting dipole to optical resonances of a silicon nanowire. A forward-to-backward ratio of 20 was demonstrated for the electric dipole emission at 680 nm from a monolayer MoS2 by optically coupling it to a silicon nanowire.

Original languageEnglish
Pages (from-to)284-290
Number of pages7
JournalNature Photonics
Volume12
Issue number5
DOIs
Publication statusPublished - 1 May 2018

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Light emission
Silicon
Nanowires
light emission
Resonators
Monolayers
optical resonance
Lighting
resonators
Scattering
emitters
silicon
nanowires
dipoles
Light sources
Optics
spectral emission
Photons
Display devices
Mie scattering

Cite this

Cihan, A.F. ; Curto, A.G. ; Raza, S. ; Kik, P.G. ; Brongersma, M.L. / Silicon Mie resonators for highly directional light emission from monolayer MoS2. In: Nature Photonics. 2018 ; Vol. 12, No. 5. pp. 284-290.
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Silicon Mie resonators for highly directional light emission from monolayer MoS2. / Cihan, A.F.; Curto, A.G.; Raza, S.; Kik, P.G.; Brongersma, M.L.

In: Nature Photonics, Vol. 12, No. 5, 01.05.2018, p. 284-290.

Research output: Contribution to journalArticleAcademicpeer-review

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AB - Controlling light emission from quantum emitters has important applications, ranging from solid-state lighting and displays to nanoscale single-photon sources. Optical antennas have emerged as promising tools to achieve such control right at the location of the emitter, without the need for bulky, external optics. Semiconductor nanoantennas are particularly practical for this purpose because simple geometries such as wires and spheres support multiple, degenerate optical resonances. Here, we start by modifying Mie scattering theory developed for plane wave illumination to describe scattering of dipole emission. We then use this theory and experiments to demonstrate several pathways to achieve control over the directionality, polarization state and spectral emission that rely on a coherent coupling of an emitting dipole to optical resonances of a silicon nanowire. A forward-to-backward ratio of 20 was demonstrated for the electric dipole emission at 680 nm from a monolayer MoS2 by optically coupling it to a silicon nanowire.

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