Broadband light-extraction enhanced by arrays of whispering gallery resonators

Xiaolong Zhu; Yiyu Ou; Valdas Jokubavicius; Mikael Syväjärvi; Ole Hansen; Haiyan Ou; N. Asger Mortensen; Sanshui Xiao

doi:10.1063/1.4771124

Broadband light-extraction enhanced by arrays of whispering gallery resonators

Xiaolong Zhu^*
, Yiyu Ou
, Valdas Jokubavicius
, Mikael Syväjärvi
, Ole Hansen
, Haiyan Ou
, N. Asger Mortensen
, Sanshui Xiao

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

We demonstrate a light-extraction approach using a whispering gallery resonators array. The wavelength-scale resonant dielectric nanospheres support whispering gallery modes, which can be coupled with the confined waveguide modes inside the bulk material, thus dramatically improving light extraction. Broadband light-extraction enhancement across the entire visible spectral range is achieved by exciting three low-order and low-quality-factor resonances. As an example, the broadband extraction enhancement of about 50% is obtained for the emission of fluorescent SiC at all the tested angles. The experimental results are supported by numerical simulations. Our light-extraction strategy could enable the manufacturing of high-throughput, nondestructive, and affordable optical coating in a variety of optical devices.

Original language	English
Article number	241108
Journal	Applied Physics Letters
Volume	101
Issue number	24
DOIs	https://doi.org/10.1063/1.4771124
State	Published - 10 Dec 2012
Externally published	Yes

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title = "Broadband light-extraction enhanced by arrays of whispering gallery resonators",

abstract = "We demonstrate a light-extraction approach using a whispering gallery resonators array. The wavelength-scale resonant dielectric nanospheres support whispering gallery modes, which can be coupled with the confined waveguide modes inside the bulk material, thus dramatically improving light extraction. Broadband light-extraction enhancement across the entire visible spectral range is achieved by exciting three low-order and low-quality-factor resonances. As an example, the broadband extraction enhancement of about 50\% is obtained for the emission of fluorescent SiC at all the tested angles. The experimental results are supported by numerical simulations. Our light-extraction strategy could enable the manufacturing of high-throughput, nondestructive, and affordable optical coating in a variety of optical devices.",

author = "Xiaolong Zhu and Yiyu Ou and Valdas Jokubavicius and Mikael Syv{\"a}j{\"a}rvi and Ole Hansen and Haiyan Ou and Mortensen, \{N. Asger\} and Sanshui Xiao",

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T1 - Broadband light-extraction enhanced by arrays of whispering gallery resonators

AU - Zhu, Xiaolong

AU - Ou, Yiyu

AU - Jokubavicius, Valdas

AU - Syväjärvi, Mikael

AU - Hansen, Ole

AU - Ou, Haiyan

AU - Mortensen, N. Asger

AU - Xiao, Sanshui

PY - 2012/12/10

Y1 - 2012/12/10

N2 - We demonstrate a light-extraction approach using a whispering gallery resonators array. The wavelength-scale resonant dielectric nanospheres support whispering gallery modes, which can be coupled with the confined waveguide modes inside the bulk material, thus dramatically improving light extraction. Broadband light-extraction enhancement across the entire visible spectral range is achieved by exciting three low-order and low-quality-factor resonances. As an example, the broadband extraction enhancement of about 50% is obtained for the emission of fluorescent SiC at all the tested angles. The experimental results are supported by numerical simulations. Our light-extraction strategy could enable the manufacturing of high-throughput, nondestructive, and affordable optical coating in a variety of optical devices.

AB - We demonstrate a light-extraction approach using a whispering gallery resonators array. The wavelength-scale resonant dielectric nanospheres support whispering gallery modes, which can be coupled with the confined waveguide modes inside the bulk material, thus dramatically improving light extraction. Broadband light-extraction enhancement across the entire visible spectral range is achieved by exciting three low-order and low-quality-factor resonances. As an example, the broadband extraction enhancement of about 50% is obtained for the emission of fluorescent SiC at all the tested angles. The experimental results are supported by numerical simulations. Our light-extraction strategy could enable the manufacturing of high-throughput, nondestructive, and affordable optical coating in a variety of optical devices.

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DO - 10.1063/1.4771124

M3 - 文章

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SN - 0003-6951

VL - 101

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 24

M1 - 241108

ER -

Broadband light-extraction enhanced by arrays of whispering gallery resonators

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