Results 81 to 90 of about 17,725 (236)

A single-channel polarimeter [PDF]

Symposium - International Astronomical Union, 1986
We have developed a single-channel photopolarimeter to measure polarization ∼1%, with an accuracy of 0.1% or so. Laboratory tests show that the performance of the instrument is as per the requirements.
S. K. Jain, J. C. Bhattacharyya
openaire   +1 more source

Polarimetry of light scattered by surface roughness and textured films and periodic structures in nanotechnologies: a new challenge in instrumentation and modeling

EPJ Web of Conferences, 2010
Exhaustive studies in the literature detail the Mueller matrices properties through decomposition, optical entropy and depolarization formalism. It has been applied for many years in rather different fields. In radar polarimetry, mathematical basis of
Ferrieu. F.
doaj   +1 more source

A Transmissive X-ray Polarimeter Design For Hard X-ray Focusing Telescopes

, 2015
The X-ray Timing and Polarization (XTP) is a mission concept for a future space borne X-ray observatory and is currently selected for early phase study. We present a new design of X-ray polarimeter based on the time projection gas chamber.
Deng, Zhi, Dong, Yongwei, Feng, Hua, Han, Dong, He, Li, Heng, Peiyin, Ji, Jianfeng, Li, Hong, Li, Tenglin, Liu, Yinong, Lu, Fangjun, Wu, Qiong, Zeng, Ming, Zhang, Shuangnan   +13 more
core   +1 more source

POET: POlarimeters for Energetic Transients [PDF]

, 2008
POET (Polarimeters for Energetic Transients) is a Small Explorer mission concept proposed to NASA in January 2008. The principal scientific goal of POET is to measure GRB polarization between 2 and 500 keV.
B. Zhang, Bing Zhang, D. H. Hartmann, J. E. Hill, J. K. Black, J. Legere, J. Macri, J. Ryan, K. Ioka, K. Toma, L. Angelini, M. L. McConnell, P. Bloser, P. Kaaret, R. Yamazaki, S. Barthelmy, T. Nakamura, T. Sakamoto, X. Wu, Yong-Feng Huang, Zi-Gao Dai   +20 more
core   +5 more sources

Single‐Shot Full‐Stokes Analysis of Partially‐Polarized Light With a Photonic Deep Random Neural Network

Laser &Photonics Reviews, EarlyView.
Photonic neural networks are emerging as a powerful tool for analyzing light. The article reports a photonic deep random neural network that performs single‐shot low‐latency measurements of the state and degree of polarization with high accuracy. Using only a stack of glass diffusers on top of a small camera sensor, this neuromorphic polarization ...
Alessandro Petrini, Claudio Conti, Davide Pierangeli   +2 more
wiley   +1 more source

Feedhorn-coupled TES polarimeter camera modules at 150 GHz for CMB polarization measurements with SPTpol

, 2012
The SPTpol camera is a dichroic polarimetric receiver at 90 and 150 GHz. Deployed in January 2012 on the South Pole Telescope (SPT), SPTpol is looking for faint polarization signals in the Cosmic Microwave Background (CMB).
Ade, Peter A. R., Aird, K. A., Austermann, J. E., Beall, J. A., Becker, D., Benson, B. A., Bleem, L. E., Britton, J., Carlstrom, J. E., Chang, C. L., Cho, H.-M., Crawford, T. M., Crites, A. T., Datesman, A., de Haan, T., Dobbs, M A., Everett, W., Ewall-Wice, A., George, E. M., Halverson, N. W., Harrington, N., Henning, J. W., Hilton, G. C., Holland, Wayne S., Holzapfel, W. L., Hubmayr, J., Irwin, K. D., Karfunkle, M., Keisler, R., Kennedy, J., Lee, A. T., Leitch, E., Li, D., Lueker, M., Marrone, D. P., McMahon, J. J., Mehl, J., Meyer, S. S., Montgomery, J., Montroy, T. E., Nagy, J., Natoli, T., Nibarger, J. P., Niemack, M. D., Novosad, V., Padin, S., Pryke, C., Reichardt, C. L., Ruhl, J. E., Saliwanchik, B. R., Sayre, J. T., Schaffer, K. K., Shirokoff, E., Story, K., Tucker, Carole, Vanderlinde, K., Vieira, J. D., Wang, G., Williamson, R., Yefremenko, V., Yoon, K. W., Young, E.   +61 more
core   +1 more source

Signatures of photon and axion-like particle mixing in the gamma-ray burst jet [PDF]

, 2011
Photons couple to Axion-Like Particles (ALPs) or more generally to any pseudo Nambu-Goldstone boson in the presence of an external electromagnetic field.
A. Avgoustidis, A. Franceschini, B.A. Bassett, C. Csáki, C. Wigger, C.D. Dermer, CAST collaboration, D. Yonetoku ., E.W. Kolb, F Villaescusa-Navarro, F.W. Stecker, G. Ghirlanda, G.B. Rybicki, H.A. Krimm ., J. Granot, J.D. Finke, J.D. Jackson, K. Toma ., L. Ostman, M. Lyutikov, M.V. Medvedev, N. Bassan, N. Bassan, Olga Mena, Particle Data Group collaboration, R. Sari, R.C. Gilmore, S. Ando, S. Razzaque, S. Razzaque, Soebur Razzaque, Y. Kaneko .   +31 more
core   +2 more sources

Anisotropy Analysis of Bamboo and Tooth Using 4‐Angle Polarization Micro‐Spectroscopy

Nano Select, EarlyView.
Super‐resolution via orientation: spatial distribution of specific molecular vibrations are revealed at 1/20 of the diffraction limit. ABSTRACT To investigate the anisotropic properties of biomaterials, two distinct classes are considered as follows: polymer‐based (cellulose in plants) and crystalline‐based (enamel in teeth), each demonstrating ...
Meguya Ryu, Hsin‐Hui Huang, Jitraporn Vongsvivut, Soon Hock Ng, Irma Dumbrytė, Donatas Narbutis, Mangirdas Malinauskas, Saulius Juodkazis, Junko Morikawa   +8 more
wiley   +1 more source

METHODS OF PRODUCING MULTIFREQUENCY GENERATION IN THE LASER TERAHERTZ RESONATOR [PDF]

Радиофизика и электроника, 2015
Terahertz lasers are used as sources of radiation in different heterodyne radio physical devices. Stable frequency difference between the heterodyne and signal channels is required when using these devices.
V. P. Radionov, P. K. Nesterov, V. K. Kiseliov   +2 more
doaj   +1 more source

Fast Retrieval of Cloud Optical Depth From Polarimetry and Multi‐Spectral Imagery That Accounts for Cloud Heterogeneity Using 3D Radiative Transfer

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 3, 16 February 2026.
Abstract We present a method for retrieving cloud optical depth that applies 3D radiative transfer to utilize the combination of polarimetry and multi‐spectral imagery that is newly available from satellite missions such as the Plankton, Aerosol, Cloud, Ocean, Ecosystem (PACE) Mission. Due to the approximate spectral invariance of scattering by clouds,
Jesse Loveridge, Christine Chiu, Alexander Marshak   +2 more
wiley   +1 more source