Reflection phase measurements by thick-gap Fabry-Pérot interferometry

2016 ◽  
Author(s):  
Tsz Kit Yung
Keyword(s):  
Phase Measurements ◽  
Reflection Phase ◽  
Fabry Perot

Large Plasmonic Resonance Shifts From Metal Loss in Slits

2021 ◽  
Author(s):  
Zohreh Sharifi ◽  
Reuven Gordon
Keyword(s):  
Time Domain ◽  
Finite Difference Time Domain ◽  
Single Mode ◽  
Metal Loss ◽  
Plasmonic Resonance ◽  
Reflection Phase ◽  
Past Experiment ◽  
Fabry Perot ◽  
The Impact ◽  
Difference Time

Abstract The impact of loss on the plasmonic resonances in metal-insulator­metal slits is analyzed, particularly the significant effect of loss on the reflection phase. The reflection is calculated analytically using single mode matching the­ory with the unconjugated form of the orthogonality relation. This theoretical calculation agrees well with comprehensive simulations, but differs substan­tially from the conjugated orthogonality result, as was used in past analytical works. This reflection phase has a large impact on the plasmonic resonance wavelengths, which are calculated using a Fabry-Pérot theory and compared with past experiment and finite-difference time-domain simulations.

Spectral Measurements of Dielectric Properties of Polypropylene Films in the Subterahertz Frequency Range

2014 ◽  
Vol 9 (4) ◽  
pp. 15-38
Author(s):  
Sergei Kuznetsov ◽  
Mikhail Astafev ◽  
Pavel Lazorskiy ◽  
Vladislav Sklyarov ◽  
Evgeny Lonshakov ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Dielectric Permittivity ◽  
Polymeric Films ◽  
Optical Methods ◽  
Spectral Measurements ◽  
Frequency Range ◽  
Phase Measurements ◽  
Fabry Perot ◽  
Polypropylene Films ◽  
Different Thickness

We describe three alternative quasi-optical methods for measuring dielectric properties of low-absorbing polymeric films at subterahertz frequencies using BWO-spectroscopy. For two of them, the dielectric permittivity of a pure film is determined through amplitude-phase measurements when the film is inserted into Mach-Zehnder and Fabry-Perot interferometers. In the third case, the permittivity is retrieved via investigating spectral features of a supplementary resonant metallic structure created on the film’s surface to enhance its dispersive properties. The described methods were applied to measure the dielectric permittivity for polypropylene films of different thickness (from 10 to 512 um) from the GoodFellow company (UK). The experimental data obtained by these three techniques are compared with each other and the analysis of factors explaining discrepancy in the measured values of the dielectric permittivity is presented

scholarly journals Beam‐switching of Fabry–Perot cavity antenna using asymmetric reflection phase response of bianisotropic metasurface

2019 ◽  
Vol 13 (6) ◽  
pp. 842-848 ◽  
Author(s):  
Kranti Kumar Katare ◽  
Sandhya Chandravanshi ◽  
Animesh Biswas ◽  
Mohammad Jaleel Akhtar
Keyword(s):  
Phase Response ◽  
Reflection Phase ◽  
Asymmetric Reflection ◽  
Fabry Perot ◽  
Beam Switching

Geometrically tunable Fabry-Perot filters based on reflection phase shift of high contrast gratings

2017 ◽  
Author(s):  
Liang Fang ◽  
Zhendong Shi ◽  
Xin Cheng ◽  
Xiang Peng ◽  
Hui Zhang
Keyword(s):  
Phase Shift ◽  
High Contrast ◽  
Reflection Phase ◽  
Fabry Perot

Measurement of reflection phase using thick-gap Fabry–Perot etalon

2016 ◽  
Vol 55 (26) ◽  
pp. 7301 ◽  
Author(s):  
Tsz Kit Yung ◽  
Wensheng Gao ◽  
Ho Ming Leung ◽  
Qiuling Zhao ◽  
Xia Wang ◽  
...  
Keyword(s):  
Reflection Phase ◽  
Fabry Perot

Reflection Phase Measurements for Ultrasonic NDE of Titanium Diffusion Bonds

2014 ◽  
Vol 33 (4) ◽  
pp. 535-546 ◽  
Author(s):  
Edwill Escobar-Ruiz ◽  
David C. Wright ◽  
Ian J. Collison ◽  
Peter Cawley ◽  
Peter B. Nagy
Keyword(s):  
Phase Measurements ◽  
Reflection Phase ◽  
Diffusion Bonds ◽  
Ultrasonic Nde ◽  
Titanium Diffusion

Correction of numerical aperture effect on reflection phase measurement using a thick-gap Fabry–Perot etalon

2017 ◽  
Vol 56 (15) ◽  
pp. 4392 ◽  
Author(s):  
Qiuling Zhao ◽  
Tsz Kit Yung ◽  
Xia Wang ◽  
Wing Yim Tam
Keyword(s):  
Phase Measurement ◽  
Numerical Aperture ◽  
Reflection Phase ◽  
Fabry Perot ◽  
Aperture Effect

scholarly journals Construction of Optical Topological Cavities Using Photonic Crystals

2021 ◽  
Vol 9 ◽  
Author(s):  
Meng Yuan ◽  
Tao Xu ◽  
Zhi Hong Hang
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystals ◽  
Cavity Mode ◽  
Photonic Bandgap ◽  
Optical Cavity ◽  
Mode Selection ◽  
Interface State ◽  
Interface States ◽  
Reflection Phase ◽  
Fabry Perot

A novel design of the Fabry–Pérot optical cavity is proposed, utilizing both the topological interface state structures and photonic bandgap materials with a controllable reflection phase. A one-to-one correspondence between the traditional Fabry–Pérot cavity and optical topological cavity is found, while the tunable reflection phase of the photonic crystal mirrors provides an extra degree of freedom on cavity mode selection. The relationship between the Zak phase and photonic bandgap provides theoretical guidance to the manipulation of the reflection phase of photonic crystals. The dispersions of interface states with different topology origins are explored. Linear interfacial dispersion emerging in photonic crystals with the valley–spin Hall effect leads to an extra n = 0 cavity mode compared to the Zak phase–induced deterministic interface states with quadratic dispersion. The frequency of the n = 0 cavity mode is not affected by the cavity length, whose quality factor can also be tuned by the thickness of the photonic crystal mirrors. With the recent help of topology photonics in the tuning reflection phase and dispersion relationship, we hope our results can provide more intriguing ideas to construct topological optical devices.

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