A Photoexcited Broadband Absorption Based on Au Nano Cross Elliptical Disks Structure with Polarization-Insensitive and Wide-Angle for Visible Light

Plasmonics ◽  
2016 ◽  
Vol 12 (1) ◽  
pp. 165-170
Author(s):  
Xiuli Jia ◽  
Xiaoou Wang ◽  
Zhongxiang Zhou ◽  
Qingxin Meng
Keyword(s):  
Visible Light ◽  
Wide Angle ◽  
Broadband Absorption ◽  
Polarization Insensitive

scholarly journals Polarization-insensitive and wide-angle broadband absorption enhancement of molybdenum disulfide in visible regime

2018 ◽  
Vol 26 (26) ◽  
pp. 33918 ◽  
Author(s):  
Xin Luo ◽  
Zhimin Liu ◽  
Ziqiang Cheng ◽  
Jianping Liu ◽  
Qi Lin ◽  
...  
Keyword(s):  
Molybdenum Disulfide ◽  
Absorption Enhancement ◽  
Wide Angle ◽  
Broadband Absorption ◽  
Polarization Insensitive

scholarly journals Polarization-Insensitive Broadband THz Absorber Based on Circular Graphene Patches

Nanomaterials ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 2709
Author(s):  
Jiajia Qian ◽  
Jun Zhou ◽  
Zheng Zhu ◽  
Zhenzhen Ge ◽  
Shuting Wu ◽  
...  
Keyword(s):  
Incident Angle ◽  
Structural Parameters ◽  
Single Layer Graphene ◽  
Localized Surface Plasmon ◽  
Wide Angle ◽  
Absorption Bandwidth ◽  
Broadband Absorption ◽  
Simulation And Optimization ◽  
Symmetrical Configuration ◽  
Polarization Insensitive

A polarization-insensitive broadband terahertz absorber based on single-layer graphene metasurface has been designed and simulated, in which the graphene metasurface is composed of isolated circular patches. After simulation and optimization, the absorption bandwidth of this absorber with more than 90% absorptance is up to 2 THz. The simulation results demonstrate that the broadband absorption can be achieved by combining the localized surface plasmon (LSP) resonances on the graphene patches and the resonances caused by the coupling between them. The absorption bandwidth can be changed by changing the chemical potential of graphene and the structural parameters. Due to the symmetrical configuration, the proposed absorber is completely insensitive to polarization and have the characteristics of wide angle oblique incidence that they can achieve broadband absorption with 70% absorptance in the range of incident angle from 0° to 50° for both TE and TM polarized waves. The flexible and simple design, polarization insensitive, wide-angle incident, broadband and high absorption properties make it possible for our proposed absorber to have promising applications in terahertz detection, imaging and cloaking objects.

scholarly journals A thermally stable and polarization insensitive square-shaped water metamaterial with ultra-broadband absorption

2021 ◽  
Author(s):  
Yadgar I. Abdulkarim ◽  
Halgurd N. Awl ◽  
Fatih Ozkan Alkurt ◽  
Fahmi F. Muhammadsharif ◽  
Salah Raza Saeed ◽  
...  
Keyword(s):  
Thermally Stable ◽  
Broadband Absorption ◽  
Polarization Insensitive

Polarization-insensitive and wide-angle plasmonically induced transparency by planar metamaterials

2012 ◽  
Vol 101 (14) ◽  
pp. 143105 ◽  
Author(s):  
Xiaoyang Duan ◽  
Shuqi Chen ◽  
Haifang Yang ◽  
Hua Cheng ◽  
Junjie Li ◽  
...  
Keyword(s):  
Wide Angle ◽  
Polarization Insensitive ◽  
Induced Transparency ◽  
Planar Metamaterials ◽  
Plasmonically Induced Transparency

Wide-Angle Ultra-Broadband Metamaterial Absorber with Polarization-Insensitive Characteristics

2021 ◽  
Vol 38 (2) ◽  
pp. 027801
Author(s):  
Peng Chen ◽  
Xianglin Kong ◽  
Jianfei Han ◽  
Weihua Wang ◽  
Kui Han ◽  
...  
Keyword(s):  
Metamaterial Absorber ◽  
Wide Angle ◽  
Polarization Insensitive

scholarly journals Quad-Band Plasmonic Perfect Absorber for Visible Light with a Patchwork of Silicon Nanorod Resonators

Materials ◽  
2018 ◽  
Vol 11 (10) ◽  
pp. 1954 ◽  
Author(s):  
Can Cao ◽  
Yongzhi Cheng
Keyword(s):  
Visible Light ◽  
Transverse Electric ◽  
Transverse Magnetic ◽  
Localized Surface Plasmon ◽  
Perfect Absorber ◽  
Absorption Properties ◽  
Perfect Absorption ◽  
Potential Applications ◽  
Polarization Insensitive ◽  
Band Absorption

In this paper, a plasmonic perfect absorber (PPA) based on a silicon nanorod resonator (SNRR) for visible light is proposed and investigated numerically. The proposed PPA is only a two-layer nanostructure consisting of a SNRR periodic array and metal substrate. The perfect absorption mainly originates from excitation of the localized surface plasmon resonance (LSPR) mode in the SNRR structure. The absorption properties of this design can be adjusted by varying the radius (r) and height (h) of the SNRR structure. What is more, the stronger quad-band absorption can be achieved by combing four different radius of the SNRR in one period as a super unit-cell. Numerical simulation indicates that the designed quad-band PPA can achieve the absorbance of 99.99%, 99.8%, 99.8%, and 92.2% at 433.5 THz, 456 THz, 482 THz, and 504.5 THz, respectively. Further simulations show that the proposed PPA is polarization-insensitive for both transverse electric (TE) and transverse magnetic (TM) modes. The proposed PPA can be a desirable candidate for some potential applications in detecting, sensing, and visible spectroscopy.

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