Grayscale image for broadband linear polarization measurement by an ultracompact metasurface

2021 ◽  
Vol 46 (5) ◽  
pp. 1117
Author(s):  
Yue Cao ◽  
Lili Tang ◽  
Renchao Jin ◽  
Jiaqi Li ◽  
Jin Wang ◽  
...  
Keyword(s):  
Linear Polarization ◽  
Polarization Measurement ◽  
Grayscale Image

Calibration of the degree of linear polarization measurement of polarized radiometer using solar light

2010 ◽  
Vol 49 (8) ◽  
pp. 1249 ◽  
Author(s):  
Zhengqiang Li ◽  
Luc Blarel ◽  
Thierry Podvin ◽  
Philippe Goloub ◽  
Ligang Chen
Keyword(s):  
Linear Polarization ◽  
Polarization Measurement ◽  
Solar Light

An Investigation of Odd Parity States in 32S

1974 ◽  
Vol 52 (11) ◽  
pp. 950-958 ◽  
Author(s):  
H. Grawe ◽  
J. E. Cairns ◽  
M. W. Greene ◽  
J. A. Kuehner
Keyword(s):  
Shell Model ◽  
Excited States ◽  
Linear Polarization ◽  
Doppler Shift ◽  
Polarization Measurement ◽  
Angular Distributions ◽  
Resonance States ◽  
Mixing Ratios ◽  
Model Predictions

States in 32S have been populated using the 31P(p,γ) reaction at the Ep = 895, 1438, and 1583 keV resonances. Angular distributions, a linear polarization measurement, and the results from the 32S(α,α′) reaction at 180° yielded the following spin and/or parity assignments for bound levels Jπ(6.62) = 4−, Jπ(6.76) = 3−, 4+, 5−, Jπ(6.85) = 3−, 4+, and Jπ(7.95) = 3, 4, 5−, and for resonance states J(10.26) = 4 and J(10.40) = 4. The γ decay of selected excited states has been studied and mixing ratios were obtained for the strongest branches. Doppler shift measurements yielded lifetimes of 810 (−250, +350) fs, > 300 fs and 110 (−40, +60) fs for the states at 6.62, 6.76, and 7.95 MeV respectively. The results are discussed and compared with shell model predictions.

Gamma-Ray Linear Polarization and Angular Distribution Formulas in Terms of Phase-Defined Reduced Matrix Elements

1971 ◽  
Vol 49 (3) ◽  
pp. 328-351 ◽  
Author(s):  
P. Taras
Keyword(s):  
Angular Distribution ◽  
Linear Polarization ◽  
Gamma Ray ◽  
Polarization Measurement ◽  
Recent Measurement ◽  
Full Potential ◽  
Matrix Elements ◽  
Mixing Ratios ◽  
Nuclear Models

Gamma-ray linear polarization and angular distribution formulas are presented in terms of the phase-defined reduced matrix elements of Rose and Brink. In particular, the mixing ratios are phase consistently related to reduced matrix elements of interaction multipole operators which are also well defined in phase. The mixing ratios extracted from the measurements of gamma-ray angular distribution and linear polarization can then be compared in both magnitude and sign with the predictions of nuclear models. The full potential of a gamma-ray linear polarization measurement is demonstrated by the discussion of a recent measurement.

The impact of signal–noise ratio on degree of linear polarization measurement

Optik ◽  
2013 ◽  
Vol 124 (3) ◽  
pp. 192-194 ◽  
Author(s):  
Weiwei Feng ◽  
Yanjun Ji ◽  
Ligang Chen
Keyword(s):  
Linear Polarization ◽  
Polarization Measurement ◽  
Signal Noise ◽  
Noise Ratio ◽  
The Impact

Phase and Polarization Measurement of a Spatially Varying Linear Polarization Distribution

Fringe 2013 ◽  
2014 ◽  
pp. 309-312
Author(s):  
Sergej Rothau ◽  
Vanusch Nercissian ◽  
Andreas Berger ◽  
Irina Harder ◽  
Klaus Mantel ◽  
...  
Keyword(s):  
Linear Polarization ◽  
Polarization Measurement ◽  
Polarization Distribution ◽  
Spatially Varying

X-ray polarimetry with the microstrip gas chamber

1998 ◽  
Vol 5 (3) ◽  
pp. 857-859 ◽  
Author(s):  
Y. Nishi ◽  
S. Aoki ◽  
A. Ochi ◽  
T. Tanimori ◽  
T. Takahashi ◽  
...  
Keyword(s):  
Energy Range ◽  
Linear Polarization ◽  
Polarization Measurement ◽  
X Rays ◽  
Two Dimensional ◽  
X Ray ◽  
X Ray Imaging ◽  
Gas Chamber

A two-dimensional microstrip gas chamber (MSGC) with a 5 cm × 5 cm detection area has been developed. It has 254 anodes and 255 back strips, both with 200 µm pitches. Using this MSGC, linear polarization of X-rays was successfully measured in the energy range 6–14 keV. In addition, the performance of the MSGC as an X-ray imaging polarimeter has been simulated using the EGS4 program (Electron Gamma Shower, Version 4) modified for this purpose. In this article, the results of both the polarization measurement and the simulation are reported.

Gamma-ray linear polarization measurement on oriented nuclei

1985 ◽  
Vol 22 (1-4) ◽  
pp. 355-361 ◽  
Author(s):  
J. Rikovska ◽  
N. J. Stone ◽  
V. R. Green
Keyword(s):  
Linear Polarization ◽  
Gamma Ray ◽  
Polarization Measurement

scholarly journals Multispectral Polarization State Analyzer of Scanning Polarimeter ScanPol

2020 ◽  
Vol 2020 ◽  
pp. 1-15
Author(s):  
Ivan Syniavskyi ◽  
Yevgen Oberemok ◽  
Yuriy Ivanov ◽  
Mikhail Sosonkin
Keyword(s):  
Atmospheric Aerosols ◽  
Linear Polarization ◽  
Near Infrared ◽  
Signal To Noise Ratio ◽  
Polarization State ◽  
Spectral Characteristics ◽  
Space Mission ◽  
Polarization Measurement ◽  
Stokes Parameters ◽  
Near Ultraviolet

We present the results of the development of a representational model of the multispectral polarization state analyzer of the ScanPol scanning polarimeter for the space experiment Aerosol-UA. The aim of the Ukrainian space mission Aerosol-UA is to create a database based on continuous satellite measurements of the optical characteristics of aerosol and cloud particles in the Earth’s atmosphere over a long period of time. The ScanPol polarimeter is designed to acquire spatial, temporal, and spectral-polarimetric measurements simultaneously to minimize instrumental “parasitic” effects and effects of “false” polarizations due to scene movement. Simultaneity is provided by separation of the initial spatial field by a pair of conjugated telescopes and a pair of Wollaston prisms. ScanPol provides to measure the first three Stokes parameters I, Q, and U of the radiation reflected by atmospheric aerosols and the Earth’s surface for a six solar reflectance spectral bands in the near ultraviolet (NUV), visible (VIS), and near-infrared (NIR) spectral channels centered in the wavelengths 370 nm, 410 nm, 555 nm, 865 nm, 1378 nm, and 1620 nm. Stokes parameters I, Q, and U are used to determine a degree of linear polarization of radiation that will allow obtaining the phase function and polarization characteristics of aerosol particle scattering, estimate their size, and determine the aerosol type and optical thickness. The polarimeter optical layout is considered, and the spectral characteristics of the transmission of optical channels are given. Obtained signal-to-noise ratio exceeded 500 for wavelengths 370 nm and 410 nm and exceeded 1000 for other wavelengths. The design of the chosen photodetectors is based on surface mount type photodiodes: Si-photodiodes Hamamatsu S10356-01 for the optical range of 370–860 nm and InGaAs-photodiodes Hamamatsu G8941-011620 for wavelengths 1378 nm and 1620 nm. The effect of orientation of Wollaston prisms axes on polarization measurement error is considered. The errors of azimuth mount of Wollaston prisms ≤2 arcmin in ScanPol leads to error of degree of linear polarization ≤0.0012.

Off-Body Spatial Diversity Reception Using Circular and Linear Polarization: Measurement and Modeling

2018 ◽  
Vol 22 (1) ◽  
pp. 209-212 ◽  
Author(s):  
Peng-Fei Cui ◽  
Wen-Jun Lu ◽  
Yu Yu ◽  
Bai Xue ◽  
Hong-Bo Zhu
Keyword(s):  
Linear Polarization ◽  
Spatial Diversity ◽  
Polarization Measurement ◽  
Diversity Reception
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