Results 61 to 70 of about 762 (173)
Design of a Bilayer Metalens for Red, Green, and Blue‐Achromatic Imaging with Wide Field of View
Advanced Photonics Research, Volume 6, Issue 11, November 2025.Herein, an RGB‐achromatic bilayer metalens with a wide 80‐degree field‐of‐view and a high 0.65 numerical aperture is presented. Using silicon nitride meta‐atoms, it maintains consistent focal lengths for red, green, and blue light, even at oblique angles.
Seong‐Won Moon +4 more
wiley +1 more source
Advanced Science, Volume 12, Issue 41, November 6, 2025.This study introduces a domain‐engineered PIN‐PMN‐PT ferroelectric crystal that enables efficient broadband second harmonic generation (SHG) without angle or temperature tuning. By engineering a “2T” domain structure, high SHG efficiency is achieved by noncollinear phase matching.
Xin Liu +8 more
wiley +1 more source
Considerations on Possible Directions for a Wide Band Polarimetry X-ray Mission
GalaxiesThe Imaging X-ray Polarimetry Explorer (IXPE) has confirmed that X-ray polarimetry is a valuable tool in astronomy, providing critical insights into the emission processes and the geometry of compact objects.
Paolo Soffitta +32 more
doaj +1 more source
X-ray polarimetry with the microstrip gas chamber
Journal of Synchrotron Radiation, 1998 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.
Y, Nishi +6 more
openaire +2 more sources
In-flight Performance of the IXPE Telescopes
The Astronomical JournalWe present a comprehensive characterization of the on-orbit imaging performance of the three telescopes on board the Imaging X-ray Polarimetry Explorer (IXPE).
Riccardo Ferrazzoli +17 more
doaj +1 more source
X-RAY AND GAMMA-RAY POLARIMETRY OF GRBS [PDF]
EAS Publications Series, 2013 Polarimetry is expected to play a major role as a diagnostic tool for GRBs. Techniques and methods for X/Gamma ray polarimetry are reviewed including the specific problems related to the transient nature of the sources. Optical data do not encourage optimistic predictions on polarimetry of afterglows.
openaire +1 more source
A gas pixel detector for x-ray polarimetry
Nuclear Physics B - Proceedings Supplements, 2006 Even though lacking of solid experimental verifications, X-ray polarimetry is strongly established as a deep diagnostic tool for probing the emission mechanisms in astronomical sources of high energy radiation. The recent development of new, more efficient instrumentation, as well as the renewed interest of the theoreticians, has drawn a significant ...
BALDINI, LUCA +14 more
openaire +3 more sources
The IXPE View of Neutron Star Low-Mass X-ray Binaries
GalaxiesLow-mass X-ray binaries hosting weakly magnetized neutron stars (NS-LMXBs) are among the brightest sources in the X-ray sky. Since 2021, the Imaging X-ray Polarimetry Explorer (IXPE) has provided new measurements of the X-ray polarization of these ...
Francesco Ursini +11 more
doaj +1 more source
Polarization Reconstruction Based on Monte Carlo Simulations for a Compton Polarimeter
AtomsState-of-the-art 2D sensitive semiconductor detectors developed within the SPARC collaboration can be utilized as dedicated Compton polarimeters in the hard X-ray regime.
Tobias Over-Winter +3 more
doaj +1 more source
Hot Coronae in Local AGN: Present Status and Future Perspectives
Galaxies, 2018 The nuclear X-ray emission in radio-quiet Active Galactic Nuclei (AGN) is commonly believed to be due to inverse Compton scattering of soft UV photons in a hot corona. The radiation is expected to be polarized, the polarization degree depending mainly on
Andrea Marinucci +6 more
doaj +1 more source