Results 131 to 140 of about 19,012,694 (264)

Fabrication‐Tolerant GaAs/SiN Coupling Above the Loss Threshold for Quantum Photonic Applications

Laser &Photonics Reviews, EarlyView.
Reliable low‐loss optical coupling between GaAs and SiN waveguides for heterogeneous integration of single‐photon sources is demonstrated. By developing a fabrication‐aware numerical design approach and accounting for experimentally measured fabrication variations and scattering losses, coupling efficiencies meeting the < 10% loss requirement for ...
Miloš Ljubotina, Jasper De Witte, Zhe Liu, Andraž Debevc, Leonardo Midolo, Gunther Roelkens, Bart Kuyken, Dries Van Thourhout, Marko Topič, Janez Krč   +9 more
wiley   +1 more source

Compact Single‐Shot Incoherent Edge Detection With a Polarization‐Multiplexed Metalens

Laser &Photonics Reviews, EarlyView.
A polarization‐sensitive metalens enables single‐shot incoherent edge detection by generating two polarization‐dependent images and digitally subtracting them to realize a high‐pass optical transfer function. ABSTRACT Edge detection under incoherent illumination is highly desirable for compact vision systems but remains challenging due to the lack of ...
Weiyan Li, Xiaotong Li, Youngsun Jeon, Hyeonsu Heo, Jaekyung Kim, Gyeongtae Kim, Shiqi Hu, Minsu Jeong, Cherry Park, Seokho Lee, Le Dai, Mu Qiao, Qi Zheng, Zheng Zhu, Zhaogang Dong, Chunying Guan, Jinhui Shi, Junsuk Rho   +17 more
wiley   +1 more source

Room‐Temperature Polariton Condensation Into Superscar Modes in Growth‐Defined Triangular Micro‐Prism Resonators

Laser &Photonics Reviews, EarlyView.
High‐Q superscar modes in growth‐defined triangular GaN micro‐prism resonators enable strong exciton–photon coupling and room‐temperature polariton condensation, offering a scalable platform for integrated III‐nitride polariton devices. ABSTRACT Group III‐nitride semiconductors are regarded as key materials for realizing polariton devices operating at ...
Chan‐Young Sung, Jungwon Kim, Daegwang Choi, Hyun Gyu Song, Yong‐Hoon Cho   +4 more
wiley   +1 more source

Nanoscale Rear‐Interface Architecture Enables 36.2 mA cm−2 Photocurrent in Ultrathin and Bifacial ACIGS Solar Cells Through Light Management

Laser &Photonics Reviews, EarlyView.
An array of SiOx nanopillars is developed on ITO transparent rear contacts through nanoimprint lithography to promote light scattering in 500–600 nm bifacial ACIGS solar cells. This architecture increases the short‐circuit current density by 7.8 and 7.6 mA cm−2 under front (up to 36.2 mA cm−2) and rear illumination, respectively, offering a scalable ...
Enzo J. Ribeiro, André F. Violas, António J. N. Oliveira, Elizaveta Yakovleva, Bárbara L. Sieira, Xavier L. Pinheiro, Saeed Bayat, Paulo A. Fernandes, Susanne Siebentritt, Marika Edoff, Pedro M. P. Salomé, Jennifer P. Teixeira   +11 more
wiley   +1 more source

Metasurface‐Enabled Single‐Shot Intensity‐and‐Phase‐Interrogation Surface‐Plasmon‐Resonance Microscopy

Laser &Photonics Reviews, EarlyView.
A metasurface‐enabled full‐Stokes polarimeter is integrated with phase‐interrogated surface plasmon resonance microscopy to enable single‐shot recovery of intensity and differential phase. The non‐interferometric platform supports quantitative refractive‐index and thickness mapping, wavelength‐resolved sensing, and dynamic multi‐channel monitoring ...
Houxin Fan, Zhipeng Hu, Hongguang Dong, Nan Wang, Yi Jin, Sailing He   +5 more
wiley   +1 more source

Multispectral Mid‐Infrared Imaging With Incoherent Light via Adiabatic Upconversion

Laser &Photonics Reviews, EarlyView.
We demonstrate room‐temperature broadband MIR imaging based on adiabatic frequency upconversion, driven by a Q‐switched pump laser and incoherent illumination. The small‐foot‐print system upconverts the spectral range to the visible domain, without scanning, thermal control and with spatial resolution below 20μm$20\mathrm{\mu}\mathrm{m}$.
Daniel Beitner, Ziv Abelson, Eyal Hollander, Omri Meron, Haim Suchowski   +4 more
wiley   +1 more source

An Adaptive Metasurface for Adjustable Magnetic Resonance Imaging Enhancement at 3 T and 7 T: A Feasibility Study

Magnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Ultra‐high field (≥ 7 T) and 3 T MRI suffer from B1+ inhomogeneity and signal loss. Conventional metasurfaces that mitigate B1+ inhomogeneity and improve image SNR are “fixed” in nature and designed for a single Larmor frequency. This study demonstrates the feasibility of an adaptive metasurface utilizing voltage‐controlled capacitors ...
Paul S. Jacobs, Pradnya Narvekar, Neil E. Wilson, Gabor Mizsei, Wyger Brink, John A. Detre, Mark A. Elliott, Ravinder Reddy   +7 more
wiley   +1 more source

Three-dimensional numerical simulation and experimental validation of airborne ground-penetrating radar based on CNCS-FDTD method under undulating terrain conditions

Scientific Reports
Traditional Finite Difference Time Domain (FDTD) approaches face challenges with increased computational demands and errors as terrain complexity and flight altitude rising.
Yuelong Chi, Lifeng Mao, Xuben Wang, Su Pang, Yi Yang   +4 more
doaj   +1 more source

Carbon dots in photocatalytic water splitting and related proton/electron‐coupled reactions: Multiscale regulation of charge dynamics and interfacial processes

Responsive Materials, EarlyView.
This review summarizes CD‐based photocatalytic water splitting as a multiscale charge‐utilization process, linking photoexcitation, charge separation, interfacial transfer, charge storage, and catalytic consumption. It highlights how CD structures and interfaces regulate charge pathways and reaction microenvironments, and how advanced characterization,
Fan Liao, Yang Liu, Zhenhui Kang
wiley   +1 more source

Photochemical fluorescence activation in arrays of microspherical containers

Responsive Materials, EarlyView.
Photoresponsive microdroplets can be produced with precise structural control from organic solutions of a photoactivatable fluorophore and aqueous solutions of a surfactant at a microfluidic cross junction. These dye‐doped microspheres assemble spontaneously in close‐packed arrays in aqueous media.
William M. Piedra, Andrea Tomassini, Keiran I. Singh, Stephen A. Lee, Françisco M. Raymo   +4 more
wiley   +1 more source