Isotropic Magnetic Purcell Effect

Feng, Tianhua; Zhang, Wei; Liang, Zixian; Xu, Yi; Miroshnichenko, Andrey E.

doi:10.1021/acsphotonics.7b01016

Cited by 49 publications

(35 citation statements)

References 41 publications

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“…More specifically, the resonances of the holey spherical and cylindrical resonators occur at nm and nm with PFs attaining and , respectively. These values of the PF presented here are notably higher than others previously reported when considering for instance cylindrical holes as in 17 ; namely a PF increment of 36 % and 18 % in the spherical and cylindrical resonators, respectively. In both resonators, additionally, a significant part of the emitted power is radiative in nature thus reaching a high quantum efficiency with the values and .…”

Section: Resultscontrasting

confidence: 75%

Multipolar-sensitive engineering of magnetic dipole spontaneous emission with a dielectric nanoresonator antenna

Habil

Zapata–Rodríguez

Cuevas

et al. 2021

Sci Rep

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We propose an axisymmetric silicon nanoresonator with designed tapered angle well for the extraordinary enhancement of the decay rate of magnetic dipole (MD) emitters. Due to the resonant coupling of a MD emitter and the MD mode of the subwavelength resonator, the Purcell factor (PF) can easily reach 500, which is significantly higher than the PF when using a silicon nanosphere of the same size. The PF and the resonance frequency are conveniently tuned through the resonator diameter and the taper angle of the blind hole. When supported by a metallic substrate, further enhancement ($$>10^3$$ > 10 3 ) of the MD spontaneous emission is triggered by an image-induced quadrupolar high-Q mode of the nanoantenna. For the sake of comparison we include a critical analysis of the canonical problem that considers a Si spherical shell. Our results might facilitate a novel strategy for promising realizations of chip-scale nanophotonic applications.

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Section: Resultscontrasting

confidence: 75%

Multipolar-sensitive engineering of magnetic dipole spontaneous emission with a dielectric nanoresonator antenna

Habil

Zapata–Rodríguez

Cuevas

et al. 2021

Sci Rep

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“…We demonstrate that coupling to a well-designed optical nanoantenna can increase either the magnetic or electric emission of trivalent europium doped nanoparticles, as predicted theoretically. 31,35,45 Finally, placing the nanoantenna at the extremity of an optical scanning tip provides full control over near-field interactions and the ability to record nanoscale maps of the relative electric and magnetic radiative LDOS (EMLDOS) around resonant nanostructures.…”

mentioning

confidence: 99%

Enhancing Magnetic Light Emission with All-Dielectric Optical Nanoantennas

et al. 2018

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Electric and magnetic optical fields carry the same amount of energy. Nevertheless, the efficiency with which matter interacts with electric optical fields is commonly accepted to be at least 4 orders of magnitude higher than with magnetic optical fields. Here, we experimentally demonstrate that properly designed photonic nanoantennas can selectively manipulate the magnetic versus electric emission of luminescent nanocrystals. In particular, we show selective enhancement of magnetic emission from trivalent europium-doped nanoparticles in the vicinity of a nanoantenna tailored to exhibit a magnetic resonance. Specifically, by controlling the spatial coupling between emitters and an individual nanoresonator located at the edge of a near-field optical scanning tip, we record with nanoscale precision local distributions of both magnetic and electric radiative local densities of states (LDOS). The map of the radiative LDOS reveals the modification of both the magnetic and electric quantum environments induced by the presence of the nanoantenna. This manipulation and enhancement of magnetic light-matter interaction by means of nanoantennas opens up new possibilities for the research fields of optoelectronics, chiral optics, nonlinear and nano-optics, spintronics, and metamaterials, among others.

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“…16 However, recent progress in nanophotonics has led to the development of nanostructures that enable the utilization of magnetism in optics. 17 By this way, emission enhancement of MD emitters has been studied via split-ring resonators, 18 Diabolo nanoantennas, 19 silicon hollow disks, [20][21][22] silicon nanocavities, 23,24 hyperbolic metamaterials 25 and various dielectric [26][27][28][29][30][31][32][33] and metal nanostructures. 16,[34][35][36] Although, there is a great interest on the enhancement of MD emission by nanophotonic structures, most of the research has been focused on the visible spectrum and few studies have been reported up to present for the near-infrared (NIR) range.…”

Section: Introductionmentioning

confidence: 99%

Germanium hollow nanodisk resonator for magnetic dipole decay rate enhancement in near‐infrared

Aslan

2020

Micro & Optical Tech Letters

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Enhancement of spontaneous emission has a large potential for the development of nanophotonics based applications. Due to the weak interaction of matter with the magnetic component of light, most of the effort has been directed toward the development of the nanophotonic devices for the enhancement of the electric dipole emission. However, in recent years the enhancement of magnetic dipole emission has attracted the focus of the researchers, owing to the utilization of the dielectric nanophotonic structures which have a great potential to facilitate various exciting applications such as nanolasers and single-photon sources. Despite the high interest on the magnetic dipole emission enhancement, most of the research has been focused on the visible spectrum and few studies have been reported up to present for the near infrared. In this context, a germanium hollow nanodisk resonator is presented and numerically investigated for magnetic dipole decay rate enhancement in the near-infrared spectrum. The obtained enhancement factor is much more than the previous results in the literature which are obtained via utilization of the dielectric nanostructures. The origin of electromagnetic behavior of the proposed resonator is revealed via near-electromagnetic-field enhancement maps and the multipolar decomposition of the electromagnetic scattering modes. Additionally, dependence of the enhancement factor on the geometrical parameters of the germanium hollow nanodisk resonator is studied via parameter sweep simulations. The results of this study may provide a novel strategy for the engineering of chip-scale nanophotonic applications.

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Isotropic Magnetic Purcell Effect

Cited by 49 publications

References 41 publications

Multipolar-sensitive engineering of magnetic dipole spontaneous emission with a dielectric nanoresonator antenna

Multipolar-sensitive engineering of magnetic dipole spontaneous emission with a dielectric nanoresonator antenna

Enhancing Magnetic Light Emission with All-Dielectric Optical Nanoantennas

Germanium hollow nanodisk resonator for magnetic dipole decay rate enhancement in near‐infrared

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