Identical emission enhancement for arbitrary-orientation magnetic dipole emitters in silicon hollow nanocavity

Yang, Yang1; Zhu, Bofeng2; Dai, Haitao3; Sun, Xiaowei4

2019-09-02

10.1364/OE.27.025931

OPTICS EXPRESS   影响因子和分区

1094-4087

Benefiting from low dissipative absorption, dielectric nanoparticles with high-refractive-index have become efficient platforms in producing magnetic dipole resonances and thus harvest functionality in enhancing spontaneous decay rate of optical magnetic dipole emitters, which is also named as magnetic Purcell effect. However, this effect is highly sensitive to emitter orientations, which brings difficulty in practical experiments. Here, we propose an effective method to suppress this orientation sensitivity based on an engineered silicon nanocavity. We will demonstrate that by balancing the resonant wavelengths and emission enhancement for two perpendicularly orientated MD emitters, the whole emission spectrum could be almost orientation-independent, thus accomplishing a completely isotropic magnetic Purcell effect. Further simulations show such effects could survive against a 10 nm spatial deviation of the emitter and will be slightly influenced by the presence of substrate. We anticipate the results of this paper could bring new possibilities in enhancing emission intensity from magnetic dipole transitions in experimental investigations. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

SCI ; EI

英语

其他

National Natural Science Foundation of China (NSFC)[51871167] ; National Natural Science Foundation of China (NSFC)[11504268]

Optics

Optics

WOS:000484366700088

OPTICAL SOC AMER

20193607395729

Decay (organic) ; Emission spectroscopy ; Refractive index ; Silicon

Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Magnetism: Basic Concepts and Phenomena:701.2 ; Light/Optics:741.1 ; Biochemistry:801.2

PHYSICS

Web of Science

1.Tianjin Univ Technol, Coll Sci, Tianjin 300384, Peoples R China
2.Nanyang Technol Univ, Sch Phys & Math Sci, Div Phys & Appl Phys, Singapore 637371, Singapore
3.Tianjin Univ, Sch Sci, Tianjin Key Lab Low Dimens Mat Phys & Preparing T, Tianjin 300072, Peoples R China
4.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China

Yang, Yang,Zhu, Bofeng,Dai, Haitao,et al. Identical emission enhancement for arbitrary-orientation magnetic dipole emitters in silicon hollow nanocavity[J]. OPTICS EXPRESS,2019,27(18):25931-25942.

Yang, Yang,Zhu, Bofeng,Dai, Haitao,&Sun, Xiaowei.(2019).Identical emission enhancement for arbitrary-orientation magnetic dipole emitters in silicon hollow nanocavity.OPTICS EXPRESS,27(18),25931-25942.

Yang, Yang,et al."Identical emission enhancement for arbitrary-orientation magnetic dipole emitters in silicon hollow nanocavity".OPTICS EXPRESS 27.18(2019):25931-25942.