scholarly journals Broadband Anomalous Reflective Metasurface for Complementary Conversion of Arbitrary Incident Polarization Angles

2021 ◽  
Author(s):  
Yuhang Sun ◽  
Yumin Liu ◽  
Tiesheng Wu ◽  
Wu Jun ◽  
Yu Wang ◽  
...  
Keyword(s):  
Incident Polarization

Controlling the interference between localized and delocalized surface plasmons via incident polarization for optical switching

2018 ◽  
Vol 32 (16) ◽  
pp. 1850194
Author(s):  
Wen-Bo Song ◽  
Yun Qi ◽  
Xiao-Peng Zhang ◽  
Ming-Li Wan ◽  
Jinna He
Keyword(s):  
Surface Plasmons ◽  
Optical Switching ◽  
Electromagnetically Induced Transparency ◽  
Ground Plane ◽  
Photonic Devices ◽  
Biochemical Sensors ◽  
Optical Responses ◽  
Surface Enhanced Raman ◽  
Induced Transparency ◽  
Incident Polarization

Surface plasmons supported by various metallic nanostructures have given rise to several significant breakthroughs in the field of integrated photonic devices due to its ability to effectively confine and enhance optical field in subwavelength volume. In particular, the demand to actively control optical responses of plasmonic systems becomes urgent for the miniaturization of signal processing devices, surface-enhanced Raman scattering (SERS) substrates and biochemical sensors. In this paper, we systematically investigate the plasmon modes as well as their interaction in a layered nanostructure composed of a periodically-arranged radiative nanoring and a metallic ground plane, as well as a thin insulating spacer. A tunable transparent peak on the background of the broadband plasmon resonance emerges in the reflection spectrum as changing the periodicity of nanoparticle array, a plasmonic analogue of electromagnetically induced transparency (EIT). Owing to the structural symmetry of the rings, we demonstrate a new scheme of controlling the interference between localized and delocalized plasmons by means of incident polarization and believe that the proposed metasurface may find applications in optical switching if the polarization-controlled components are introduced.

The effect of incident polarization handedness and ellipticity on the laser damage resistance of oriented liquid crystals in the nanosecond regime

2021 ◽  
Author(s):  
Kenneth L. Marshall ◽  
Kyle R. P. Kafka ◽  
Nathaniel D. Urban ◽  
Jason U. Wallace ◽  
Stavros G. Demos
Keyword(s):  
Liquid Crystals ◽  
Laser Damage ◽  
Damage Resistance ◽  
Incident Polarization

scholarly journals Characterization of the koch fractal hexagonal loop frequency selective surface for X-band application

2020 ◽  
Vol 20 (2) ◽  
pp. 878
Author(s):  
Nur Biha Binti Mohamed Nafis ◽  
Mohamad Kamal Bin A. Rahim ◽  
Osman Bin Ayop ◽  
Huda Bin A MAjid ◽  
Sunti Tuntrakool
Keyword(s):  
Resonant Frequency ◽  
Transmission Coefficient ◽  
Parametric Analysis ◽  
Frequency Selective Surface ◽  
Angular Stability ◽  
X Band ◽  
Koch Fractal ◽  
Frequency Selective ◽  
Incident Polarization

<p>This paper presented the bandstop Koch fractal hexagonal loop frequency selective surface (FSS) for the X-band application. The simulated transmission coefficient response (S_21) had been obtained by using CST software. The proposed Koch fractal hexagonal loop FSS structure is highly insensitive towards angular stability and also incident polarization up to 60 degree , with deviation of resonant frequency,  f_r below than 1%. The parametric analysis on the effect of the periodicity, width, and height of the fractal FSS structure on the S_21 has been illustrated and discussed thoroughly.</p>

Influence of hole on shielding effectiveness of electromagnetic shielding fabric under incident polarization wave

2015 ◽  
Vol 27 (5) ◽  
pp. 612-627 ◽  
Author(s):  
Zhe Liu ◽  
Xing Rong ◽  
Xiuchen Wang ◽  
Zhong Zhou
Keyword(s):  
Maximum Size ◽  
Electromagnetic Shielding ◽  
Testing System ◽  
Shielding Effectiveness ◽  
Wave Direction ◽  
Content Type ◽  
Polarization Wave ◽  
Influencing Mechanism ◽  
Hole Area ◽  
Incident Polarization

Purpose – The purpose of this paper is to explore the influence of hole on shielding effectiveness (SE) of electromagnetic shielding (EMS) fabric under incident polarization wave, and to propose a “Key Size” theory to explain the influence mechanism. Design/methodology/approach – “Key Size” parameters describing hole shape are established, and a number of representative samples with rectangular and oval holes are made. SE of the samples are tested by waveguide testing system. Influence of the hole on the SE of the samples is analyzed according to vertical or horizontal maximum size and polarization wave direction. Finally, the “Key Size theory” and “Secondary Size theory” are proposed to explain the influencing mechanism. Findings – The hole influences on the SE are related to the vertical and the horizontal maximum size of the holes and the direction of the polarization wave. As the direction of the polarization wave is vertical (or horizontal), greater maximum size results in lower SE. As the maximum size is constant, greater maximum size causes lower SE. As the maximum size reaches to a certain value, a dividing point of the SE occurs. As the direction of the polarization wave is consistent with the direction of the maximum size, same hole area results in same SE. Originality/value – The explored influences and mechanism provide an important guiding reference for the hole design of the EMS fabric, and can be applied to the holes design of the EMS garment, composite materials, and tents.

Dependence of extinction cross-section on incident polarization state and particle orientation

2011 ◽  
Vol 112 (12) ◽  
pp. 2035-2039 ◽  
Author(s):  
Ping Yang ◽  
Manfred Wendisch ◽  
Lei Bi ◽  
George Kattawar ◽  
Michael Mishchenko ◽  
...  
Keyword(s):  
Cross Section ◽  
Polarization State ◽  
Particle Orientation ◽  
Extinction Cross Section ◽  
Incident Polarization
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