Enhanced light outcoupling in microdisk lasers via Si spherical nanoantennas

Kryzhanovskaya, N. V.; Polubavkina, Yu. S.; Moiseev, E. I.; Maximov, M. V.; Zhurikhina, Valentina; Scherbak, Sergey; Lipovskii, A. A.; Kulagina, M. M.; Zadiranov, Yu. M.; Mukhin, I. S.; Komissarenko, Filipp; Bogdanov, Andrey; Krasnok, Alex; Zhukov, A. E.

doi:10.1063/1.5046823

Cited by 20 publications

(13 citation statements)

References 37 publications

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“…In practice, the Q factor of a single standing resonance can be defined via its resonance linewidth at half maximum (Δω) as Q = ω 0 /Δω, implying that a higher Q factor possesses narrower resonant lines. Optical resonators supporting high-Q modes include microdisk resonators [4][5][6][7][8] , microspheres 9 , Bragg reflector microcavities 10 , and photonic crystals [11][12][13] , whose high Q factors can go up to ∼10 3 -10 6 . However, these microscale dielectric resonators are bulky and exhibit modest light-matter interactions when averaged over their large sizes.…”

mentioning

confidence: 99%

Suppressing material loss in the visible and near-infrared range for functional nanophotonics using bandgap engineering

Wang¹,

Krasnok²,

Lepeshov³

et al. 2020

Nat Commun

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All-dielectric nanostructures have recently opened exciting opportunities for functional nanophotonics, owing to their strong optical resonances along with low material loss in the near-infrared range. Pushing these concepts to the visible range is hindered by their larger absorption coefficient, thus encouraging the search for alternative dielectrics for nanophotonics. Here, we employ bandgap engineering to synthesize hydrogenated amorphous Si nanoparticles (a-Si:H NPs) offering ideal features for functional nanophotonics. We observe significant material loss suppression in a-Si:H NPs in the visible range caused by hydrogenation-induced bandgap renormalization, producing strong higher-order resonant modes in single NPs with Q factors up to ~100 in the visible and near-IR range. We also realize highly tunable all-dielectric meta-atoms by coupling a-Si:H NPs to photochromic spiropyran molecules. ~70% reversible all-optical tuning of light scattering at the higher-order resonant mode under a low incident light intensity is demonstrated. Our results promote the development of high-efficiency visible nanophotonic devices.

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mentioning

confidence: 99%

Suppressing material loss in the visible and near-infrared range for functional nanophotonics using bandgap engineering

Wang¹,

Krasnok²,

Lepeshov³

et al. 2020

Nat Commun

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“…Because of their optical properties briefly discussed above, the high-index dielectric NPs are very attractive for various applications, including the formation of desired radiation and absorption patterns 248 , enhanced spontaneous emission (Purcell effect) [249][250][251][252][253][254] , tailoring of scattering [255][256][257][258][259][260] , nonlinear action [261][262][263][264][265][266][267][268] , strong coupling 83,269 , sensing 188 , optical interconnections, etc. Nowadays, DNPs are often used in metamaterials [270][271][272][273] and metasurfaces 265,[274][275][276][277][278][279][280] .…”

Section: High-index Dielectricsmentioning

confidence: 99%

Enhanced light–matter interaction in two-dimensional transition metal dichalcogenides

et al. 2022

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Two dimensional (2D) transition metal dichalcogenide (TMDC) materials, such as MoS2, WS2, MoSe2, and WSe2, have received extensive attention in the past decade due to their extraordinary electronic, optical and thermal properties. They evolve from indirect bandgap semiconductors to direct bandgap semiconductors while their layer number is reduced from few layers to a monolayer limit. Consequently, there is strong photoluminescence in a monolayer (1L) TMDC due to the large quantum yield. Moreover, such monolayer semiconductors have two other exciting properties: large binding energy of excitons and valley polarization. These properties make them become ideal materials for various electronic, photonic and optoelectronic devices. However, their performance is limited by the relatively weak light-matter interactions due to their atomically thin form factor. Resonant nanophotonic structures provide a viable way to address this issue and enhance light-matter interactions in 2D TMDCs. Here, we provide an overview of this research area, showcasing relevant applications, including exotic light emission, absorption and scattering features. We start by overviewing the concept of excitons in 1L-TMDC and the fundamental theory of cavity-enhanced emission, followed by a discussion on the recent progress of enhanced light emission, strong coupling and valleytronics. The atomically thin nature of 1L-TMDC enables a broad range of ways to tune its electric and optical properties. Thus, we continue by reviewing advances in TMDC-based tunable photonic devices. Next, we survey the recent progress in enhanced light absorption over narrow and broad bandwidths using 1L or few-layer TMDCs, and their applications for photovoltaics and photodetectors. We also review recent efforts of engineering light scattering, e.g., inducing Fano resonances, wavefront engineering in 1L or few-layer TMDCs by either integrating resonant structures, such as plasmonic/Mie resonant metasurfaces, or directly patterning monolayer/few layers TMDCs. We then overview the intriguing physical properties of different types of van der Waals heterostructures, and their applications in optoelectronic and photonic devices. Finally, we draw our opinion on potential opportunities and challenges in this rapidly developing field of research.

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“…We demonstrate experimental results of particle transfer from both conductive and non-conductive initial substrates to an auxiliary non-conductive substrate in order to study the optical properties of single BTO nanoparticles and fabricate complex all-dielectric nanophotonic structures. This technique is a further development of the approach demonstrated in [ 27 ] and successfully implemented in [ 30 , 31 , 32 , 33 ], and is based on the combination of a mechanical manipulator and electrostatic impact on the object of manipulation.…”

Section: Introductionmentioning

confidence: 99%

Manipulation Technique for Precise Transfer of Single Perovskite Nanoparticles

et al. 2020

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In this article, we present the pick-and-place technique for the manipulation of single nanoparticles on non-conductive substrates using a tungsten tip irradiated by a focused electron beam from a scanning electron microscope. The developed technique allowed us to perform the precise transfer of single BaTiO3 nanoparticles from one substrate to another in order to carry out measurements of elastic light scattering as well as second harmonic generation. Also, we demonstrate a fabricated structure made by finely tuning the position of a BaTiO3 nanoparticle on top of a dielectric nanowaveguide deposited on a glass substrate. The presented technique is based on the electrostatic interaction between the sharp tungsten tip charged by the electron beam and the nanoscale object. A mechanism for nanoparticle transfer to a non-conductive substrate is proposed and the forces involved in the manipulation process are evaluated. The presented technique can be widely utilized for the fabrication of nanoscale structures on optically transparent non-conductive substrates, which presents a wide range of applications for nanophotonics.

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Enhanced light outcoupling in microdisk lasers via Si spherical nanoantennas

Cited by 20 publications

References 37 publications

Suppressing material loss in the visible and near-infrared range for functional nanophotonics using bandgap engineering

Suppressing material loss in the visible and near-infrared range for functional nanophotonics using bandgap engineering

Enhanced light–matter interaction in two-dimensional transition metal dichalcogenides

Manipulation Technique for Precise Transfer of Single Perovskite Nanoparticles

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