Results 41 to 50 of about 11,979 (216)

Mode‐dependent Far‐field Radiation of Circularly Polarized Light by a Single Plasmonic Nanohelix

Advanced Optical Materials, Volume 13, Issue 8, March 13, 2025.
The numerical simulations explored the chiroptical response and far‐field radiation behaviors of single plasmonic nanoantennas transitioning into helical structures. This study highlights the ability of these plasmonic nanohelices to regulate the far‐field directionality of radiation power and circular polarization in plasmon‐exciton coupled systems ...
Yiou Cui, Yilin Chen, Jing Li, Shengyan Wang, Ruiqian Zhang, Zhongyi Chen, Huan Liu, Ximin Cui, Xihang Shi, Biye Xie, Xiaolu Zhuo   +10 more
wiley   +1 more source

Estimation precision of degree of polarization in the presence of signal-dependent and additive Poisson noises [PDF]

Journal of the European Optical Society-Rapid Publications, 2008
We address precision of estimation of the degree of polarization (DOP) from the orthogonal state contrast image (OSCI) in the presence of both signal-dependent Poisson noise due to useful signal, and additive Poisson noise due to dark current and / or ...
Bénière Arnaud, Goudail François, Alouini Mehdi, Dolfi Daniel   +3 more
doaj   +1 more source

Pseudo‐Dichroism: Nanophotonic Induction of Chiroptical Activity in Symmetric Molecular Systems

Advanced Optical Materials, EarlyView.
By analyzing vibrational circular dichroism (VCD) spectra of chiral nanomaterials, we distinguish genuine molecular chirality (true dichroism) from measurement artifacts (pseudo dichroism) using a novel, robust framework. The spectral criteria we establish apply broadly to all chiroptical techniques in nanomaterial research, enhancing precision in ...
Victor Tabouillot, Jeremy Landry, Mario González‐Jiménez, Nikolaj Gadegaard, Christian Johannessen, Klaas Wynne, Ewan W. Blanch, Malcolm Kadodwala   +7 more
wiley   +1 more source

Polarimetric approach for well-defined impurities detection in isotropic materials [PDF]

Journal of the European Optical Society-Rapid Publications, 2014
In this paper, a new kind of approach to reveal the presence of well-defined impurities in isotropic materials is proposed and verified against actual measurements over real samples. The rationale lies in the different polarimetric symmetry properties of
Buono A., Iodice M., Rendina I., Nunziata F., Migliaccio M.   +4 more
doaj   +1 more source

Design of a Bilayer Metalens for Red, Green, and Blue‐Achromatic Imaging with Wide Field of View

Advanced Photonics Research, EarlyView.
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, Hyeonsu Heo, Dong Kyo Oh, Eunji Lee, Junsuk Rho   +4 more
wiley   +1 more source

Helical Photonic Metamaterials for Encrypted Chiral Holograms

Advanced Science, EarlyView.
This article explores the untapped potential of 3D‐printed helical structures as chiral metamaterials and metaholograms by uncovering how specific geometric parameters govern their chiroptical behavior. Combining terahertz experiments and simulations, it reveals how tunable, stretchable helices enable broadband ellipticity and encrypted QR codes ...
Wonjin Choi, Widianto P. Moestopo, Songyun Gu, Taeil Lee, Jae‐Hyuck Yoo, Xiaoxing Xia, Michael R. Armstrong   +6 more
wiley   +1 more source

Polarization‐Improved Bidirectional‐Pump Atomic Magnetometer Based on Spin‐Decoupled Metasurface

Advanced Science, EarlyView.
The polarization‐improved bidirectional‐pump atomic magnetometer based on spin‐decoupled metasurface has been experimentally demonstrated. The system, based on a metasurface, successfully realizes precise control of atomic spin polarization. The research not only offers a novel technique for designing high‐performance optically pumped atomic ...
Shuo Sun, Jiahao Zhang, Rongtong Zhu, Huanyu Zhou, Tianshi Cheng, Liang Chen, Jin Li   +6 more
wiley   +1 more source

Multifunctional Chiral Halide Perovskites: Advancing Chiro‐Optics, Chiro‐Optoelectronics, and Spintronics

Advanced Science, EarlyView.
This review spotlights key advances in chiral halide perovskite materials and devices, covering device architectures, fabrication methods, and emerging applications like circularly polarized light functions, neuromorphic computing, and spintronics. It explores structure‐property relationships and chirality transfer mechanisms, discusses challenges in ...
Qi Liu, Hui Ren, Qi Wei, Mingjie Li
wiley   +1 more source

Thermodynamic Reversibility in Polarimetry

Photonics, 2022
The action of linear media on incident polarized electromagnetic waves can produce two kinds of thermodynamic irreversible effects, namely, loss of intensity, in general anisotropic, and reduction of the degree of polarization. Even though both phenomena can be described through specific properties, the overall degree of reversibility of polarimetric ...
openaire   +3 more sources

Nonlinear Optical Imaging of Entangled Heterophase Polydomains in Ferroelectric BZT Films

Advanced Electronic Materials, EarlyView.
A non‐destructive, label‐free nonlinear optical imaging methodology is presented for the characterization of heterophase polydomains in ferroelectric materials. Through advanced second‐harmonic generation microscopy, tetragonal and rhombohedral domain structures are visualized directly, and local strain distributions in BaZr₀.₂Ti₀.₈O₃ films are ...
Piyali Maity, Hongbo Chen, Jun Ouyang, Yuhang Ren   +3 more
wiley   +1 more source