Results 51 to 60 of about 575 (166)

Evaluating Simulated RADARSAT Constellation Mission (RCM) Compact Polarimetry for Open-Water and Flooded-Vegetation Wetland Mapping

Remote Sensing, 2020
When severe flooding occurs in Canada, the Emergency Geomatics Service (EGS) is tasked with creating and disseminating maps that depict flood extents in near real time.
Ian Olthof, Thomas Rainville
doaj   +1 more source

Terahertz Metasurface for Spatial Detection of Full Stokes Parameters and Polarization Imaging

Nanophotonics, Volume 15, Issue 9, 13 May 2026.
This work presents a THz polarization analyzer with significantly improved robustness against nonuniformity. By integrating four polarization‐sensitive meta‐atoms into a meta‐cell, the metalens splits incident light into six polarization components and generates off‐axis focal spots.
Shengnan Guan, Jierong Cheng, Haifeng Xu, Fan Li, Chenglong Liu, Shengjiang Chang   +5 more
wiley   +1 more source

Metasurfaces and Metadevices for Topological Electromagnetic Waves

Advanced Physics Research, Volume 5, Issue 5, May 2026.
Optical topologies refer to diverse topological localized structures made by diverse parameters of light fields, such as vortices, skyrmions, and hopfions. This article navigates a direction of metasurface‐based integrated devices for generation, manipulation and detection of novel topologies of light, which would be a rapidly growing interdisciplinary
Rensheng Xie, Nilo Mata‐Cervera, Xi Xie, Yijie Shen   +3 more
wiley   +1 more source

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

Laser &Photonics Reviews, Volume 20, Issue 9, 6 May 2026.
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

Radio Polarimetry of the ELAIS N1 Field: Polarized Compact Sources [PDF]

The Astrophysical Journal, 2007
We present deep polarimetric observations at 1420 MHz of the European Large Area ISO Survey North 1 region (ELAIS N1) as part of the Dominion Radio Astrophysical Observatory Planck Deep Fields project. By combining closely spaced aperture synthesis fields, we image a region of 7.43 square degrees to a maximum sensitivity in Stokes Q and U of 78 microJy/
Taylor, A. R., Stil, J. M., Grant, J. K., Landecker, T. L., Kothes, R., Reid, R. I., Gray, A. D., Scott, Douglas, Martin, P. G., Boothroyd, A. I., Joncas, G., Lockman, Felix J., English, J., Sajina, A., Bond, J. R.   +14 more
openaire   +3 more sources

Observation and Coordination Needs for Current, Near‐Future, and Next Generation Earth‐Observing SAR Systems

Earth and Space Science, Volume 13, Issue 5, May 2026.
Abstract This paper summarizes an evaluation by experts of how coordination of Earth‐observing Synthetic Aperture Radar (SAR) missions among the world's space agencies could advance toward game‐changing scientific discoveries and fully realizing SAR's practical capability to address many issues facing society.
Cathleen E. Jones, Ake Rosenqvist, Björn Rommen, Magdalena Fitrzyk, Eric Rignot, Bernd Scheuchl, Yujie Zheng, Andrew Hooper, Mark Simons, Tomokazu Kobayashi, Paul Siqueira, Maurizio Santoro, Takeo Tadono, Laura Hess, Heather McNairn, Laura Frulla, Malin Johansson, Wolfgang Dierking, Line Rouyet, Annett Bartsch, Paco Lopez Dekker, Johnny A. Johannessen   +21 more
wiley   +1 more source

Material Modification of Borofloat 33 During Scanning‐Based Microforming Using Femtosecond Laser Pulses

Advanced Optical Materials, Volume 14, Issue 14, 10 April 2026.
Possibilities for ablation‐free microforming of borosilicate glass using ultrashort laser pulses are presented. Depending on the laser parameters and scanning strategy, surface structures with profile heights of up to 20 µm could be produced. The work provides a comprehensive experimental and analytical characterization of the microforming process ...
Marina Skiba, Hagen Peter Kohl, Eric Schadow, Stefan Nolte, Andrés Fabián Lasagni, Jens Bliedtner   +5 more
wiley   +1 more source

Engineering Asymmetry: How Chirality Boosts Catalysis, Spin Selectivity, and Light–Matter Interactions

ChemPhotoChem, Volume 10, Issue 4, April 2026.
This review connects chiroptical spectroscopy, asymmetric catalysis, and spintronics, revealing how chirality influences the interactions of matter with light, charge, and spin. Across diverse systems, remarkable chiroptical effects emerge, showing among others that high efficiencies can arise without absolute enantiopurity, and that functionality is ...
Charitini Panagiotopoulou, Maedeh Anisi, Changseop Jeong, Kamyar Shameli, J. Lorenzo Alonso‐Gómez, Aras Kartouzian   +5 more
wiley   +1 more source

General Calibration Algorithm for Single-transmitting-dual-receiving Polarimetric SAR System

Leida xuebao, 2012
The single-transmitting-dual-receiving polarimetric SAR system has only two receving channels, which induces lack of prior information for calibration. Due to the polarization diversity of this kind of system (which operates on different dual and compact
Chen Lin, Zhang Jing-jing, Li Yang, Hong Wen   +3 more
doaj   +1 more source

Reinforcement Learning Enabled Nanophotonic Devices

Laser &Photonics Reviews, Volume 20, Issue 6, 18 March 2026.
A reinforcement learning algorithm is used to design photonic devices. The method creates metagratings and grating couplers that efficiently control both the direction and polarization of light. Further, a reinforcement learning approach is used to design in‐plane integrated photonic devices. This approach paves the way for advanced photonic components
Zi Wang, Junyeob Song, Minsuk Lee, Wenqi Zhu, Amit Agrawal   +4 more
wiley   +1 more source