Tuning of Classical Electromagnetically Induced Reflectance in Babinet Chalcogenide Metamaterials
Summary: Metamaterials analog of electromagnetically induced reflectance (EIR) has attracted intense attentions since they can provide various applications for novel photonic devices such as optical detectors with a high sensitivity and slow-light devices with a low loss. The development of dynamic...
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doaj-8f9cf3da652643baab8f55b22127639e2020-11-25T03:56:23ZengElsevieriScience2589-00422020-08-01238101367Tuning of Classical Electromagnetically Induced Reflectance in Babinet Chalcogenide MetamaterialsKuan Liu0Yang Li1Kairong Qin2Tun Cao3School of Optoelectronic Engineering and Instrumentation Science, Dalian University of Technology, Dalian 116024, ChinaSchool of Optoelectronic Engineering and Instrumentation Science, Dalian University of Technology, Dalian 116024, ChinaSchool of Optoelectronic Engineering and Instrumentation Science, Dalian University of Technology, Dalian 116024, ChinaSchool of Optoelectronic Engineering and Instrumentation Science, Dalian University of Technology, Dalian 116024, China; Corresponding authorSummary: Metamaterials analog of electromagnetically induced reflectance (EIR) has attracted intense attentions since they can provide various applications for novel photonic devices such as optical detectors with a high sensitivity and slow-light devices with a low loss. The development of dynamic photonic devices desires a tunable EIR feature in metamaterials. However, most metamaterials-induced EIR is not spectrally controllable particularly for the near-infrared (NIR) region. Herein, a tuning of EIR is illustrated in Babinet chalcogenide metamaterials in the NIR region. The EIR response is created by weak hybridization of two dipolar (bright) modes of the paired Au slots. Such a mode interference can be engineered through non-volatile phase transition to the refractive index of the Ge2Sb2Te5 (GST), resulting in an active controlling of the reflection window. A 15% spectral tuning of the reflectance peak is observed experimentally in the NIR region as switching the GST state between amorphous and crystalline.http://www.sciencedirect.com/science/article/pii/S2589004220305551ElectromagneticsMetamaterialsMaterials Design |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Kuan Liu Yang Li Kairong Qin Tun Cao |
spellingShingle |
Kuan Liu Yang Li Kairong Qin Tun Cao Tuning of Classical Electromagnetically Induced Reflectance in Babinet Chalcogenide Metamaterials iScience Electromagnetics Metamaterials Materials Design |
author_facet |
Kuan Liu Yang Li Kairong Qin Tun Cao |
author_sort |
Kuan Liu |
title |
Tuning of Classical Electromagnetically Induced Reflectance in Babinet Chalcogenide Metamaterials |
title_short |
Tuning of Classical Electromagnetically Induced Reflectance in Babinet Chalcogenide Metamaterials |
title_full |
Tuning of Classical Electromagnetically Induced Reflectance in Babinet Chalcogenide Metamaterials |
title_fullStr |
Tuning of Classical Electromagnetically Induced Reflectance in Babinet Chalcogenide Metamaterials |
title_full_unstemmed |
Tuning of Classical Electromagnetically Induced Reflectance in Babinet Chalcogenide Metamaterials |
title_sort |
tuning of classical electromagnetically induced reflectance in babinet chalcogenide metamaterials |
publisher |
Elsevier |
series |
iScience |
issn |
2589-0042 |
publishDate |
2020-08-01 |
description |
Summary: Metamaterials analog of electromagnetically induced reflectance (EIR) has attracted intense attentions since they can provide various applications for novel photonic devices such as optical detectors with a high sensitivity and slow-light devices with a low loss. The development of dynamic photonic devices desires a tunable EIR feature in metamaterials. However, most metamaterials-induced EIR is not spectrally controllable particularly for the near-infrared (NIR) region. Herein, a tuning of EIR is illustrated in Babinet chalcogenide metamaterials in the NIR region. The EIR response is created by weak hybridization of two dipolar (bright) modes of the paired Au slots. Such a mode interference can be engineered through non-volatile phase transition to the refractive index of the Ge2Sb2Te5 (GST), resulting in an active controlling of the reflection window. A 15% spectral tuning of the reflectance peak is observed experimentally in the NIR region as switching the GST state between amorphous and crystalline. |
topic |
Electromagnetics Metamaterials Materials Design |
url |
http://www.sciencedirect.com/science/article/pii/S2589004220305551 |
work_keys_str_mv |
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1724465322247847936 |