scholarly journals Tunable graphene-based mid-infrared plasmonic wide-angle narrowband perfect absorber

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Hongju Li ◽  
Lingling Wang ◽  
Xiang Zhai
Keyword(s):  
Perfect Absorber ◽  
Wide Angle ◽  
Mid Infrared

scholarly journals Intensity Switchable and Wide-Angle Mid-Infrared Perfect Absorber with Lithography-Free Phase-Change Film of Ge2Sb2Te5

Micromachines ◽  
2019 ◽  
Vol 10 (6) ◽  
pp. 374
Author(s):  
Xiaomin Hua ◽  
Gaige Zheng
Keyword(s):  
Thin Film ◽  
Thin Layer ◽  
Crystalline State ◽  
Transverse Electric ◽  
Dynamic Control ◽  
Transverse Magnetic ◽  
Perfect Absorber ◽  
Wide Angle ◽  
Mid Infrared ◽  
Tunable Absorber

The range of fundamental phenomena and applications achievable by metamaterials (MMs) can be significantly extended by dynamic control over the optical response. A mid-infrared tunable absorber which consists of lithography-free planar multilayered dielectric stacks and germanium antimony tellurium alloy (Ge2Sb2Te5, GST) thin film was presented and studied. The absorption spectra under amorphous and crystalline phase conditions was evaluated by the transfer matrix method (TMM). It was shown that significant tuning of absorption can be achieved by switching the phase of thin layer of GST between amorphous and crystalline states. The near unity (>90%) absorption can be significant maintained by incidence angles up to 75 under crystalline state for both transverse electric (TE) and transverse magnetic (TM) polarizations. The proposed method enhances the functionality of MMs-based absorbers and has great potential for application to filters, emitters, and sensors.

scholarly journals Research on Perfect and Tunable Metamaterial Absorber Based on Crosshair-shaped Graphene

2021 ◽  
Vol 2109 (1) ◽  
pp. 012015
Author(s):  
Yiran Guo ◽  
Yunping Qi ◽  
Chuqin Liu ◽  
Weiming Liu ◽  
Xiangxian Wang
Keyword(s):  
Relaxation Time ◽  
Chemical Potential ◽  
Incident Angle ◽  
Fdtd Method ◽  
Reference Value ◽  
Metamaterial Absorber ◽  
Selective Absorption ◽  
Perfect Absorber ◽  
Wide Angle ◽  
Perfect Absorption

Abstract Graphene, as a new nano-material, according to the physical properties of electric field localization and selective absorption on light of surface plasmon resonance (SPR), a tunable, multi-band and wide-angle perfect absorber based on crosshair-shaped graphene is devised by using the Finite Difference in Time Domain (FDTD) method. In this paper, the effects of chemical potential, relaxation time, and incident angle of light on the absorptivity of graphene are systematically discussed. The simulation experiment shows that there are two absorption peaks with perfect absorption rate appeared in the study range, and the maximum modulation index can be obtained by changing the relaxation time. Finally, it proves that the absorber is insensitive to wide-angle of light. Thus, it is able to be concluded that the absorber has a great reference value to sensor, wireless communication, biomedical and other fields.

Tunable ultra-narrowband and wide-angle graphene-based perfect absorber in the optical communication region

2018 ◽  
Vol 11 (10) ◽  
pp. 105102 ◽  
Author(s):  
Xin Luo ◽  
Zhimin Liu ◽  
Lingling Wang ◽  
Jianping Liu ◽  
Qi Lin
Keyword(s):  
Optical Communication ◽  
Perfect Absorber ◽  
Wide Angle

Polarization and angle insensitive ultra-broadband mid-infrared perfect absorber

2020 ◽  
Vol 384 (14) ◽  
pp. 126288 ◽  
Author(s):  
Biao Wu ◽  
Zhengqi Liu ◽  
Guozhen Du ◽  
Qiqi Chen ◽  
Xiaoshan Liu ◽  
...  
Keyword(s):  
Perfect Absorber ◽  
Mid Infrared

Wide-Angle and Polarization-Insensitive Perfect Absorber for Organic Photovoltaic Layers

2013 ◽  
Vol 25 (13) ◽  
pp. 1266-1269 ◽  
Author(s):  
Kai Liu ◽  
Haifeng Hu ◽  
Haomin Song ◽  
Xie Zeng ◽  
Dengxin Ji ◽  
...  
Keyword(s):  
Organic Photovoltaic ◽  
Perfect Absorber ◽  
Wide Angle ◽  
Polarization Insensitive

scholarly journals Wide-angle Spectrally Selective Perfect Absorber by Utilizing Dispersionless Tamm Plasmon Polaritons

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Chun-hua Xue ◽  
Feng Wu ◽  
Hai-tao Jiang ◽  
Yunhui Li ◽  
Ye-wen Zhang ◽  
...  
Keyword(s):  
Perfect Absorber ◽  
Wide Angle ◽  
Spectrally Selective ◽  
Plasmon Polaritons

scholarly journals Design principles for infrared wide-angle perfect absorber based on plasmonic structure

2011 ◽  
Vol 19 (18) ◽  
pp. 17413 ◽  
Author(s):  
Mingbo Pu ◽  
Chenggang Hu ◽  
Min Wang ◽  
Cheng Huang ◽  
Zeyu Zhao ◽  
...  
Keyword(s):  
Design Principles ◽  
Perfect Absorber ◽  
Wide Angle ◽  
Plasmonic Structure
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