Results 181 to 190 of about 19,915 (293)

Ellipticity‐Controlled Exceptional Points and Cross‐Polarized Phase Singularities in Multi‐Layer Silicon Guided Mode Resonant Metasurfaces

open access: yesAdvanced Optical Materials, EarlyView.
Omni‐polarizers that pull all input polarization states to an elliptical or linear polarization can be made using highly resonant bi‐layer metasurfaces. The ellipticity of the selected polarization can be controlled by choosing the layer separation.
Ben Goldberg   +2 more
wiley   +1 more source

RADAR: Raman Spectral Analysis Using Deep Learning for Artifact Removal

open access: yesAdvanced Optical Materials, EarlyView.
RADAR is introduced, two lightweight deep learning models for artifact removal, capable of simultaneous denoising and correction of Raman spectra, significantly accelerating high‐quality data acquisition. This work advances Raman spectroscopy as a faster, more reliable tool for chemical analysis, with broad applications in materials science, biomedical
Joel Sjöberg   +5 more
wiley   +1 more source

C2LI: Enhancing Structural Color Sensing and Imaging via Complementary Color Laser Illumination

open access: yesAdvanced Optical Materials, EarlyView.
This article introduces complementary color laser illumination (C2LI) and demonstrates it to be an effective approach for engaging the visual system to enhance perceptual sensitivity and chromatic contrast. This enhances a human user's ability to detect subtle differences in sample or medium characteristics, enabling novel applications in colorimetric ...
Tomoshree Dash   +3 more
wiley   +1 more source

A Type I Hyperbolic Metamaterial Driven by Phonons on ZnO

open access: yesAdvanced Optical Materials, EarlyView.
This article reports the first realization of a phonon‐driven type I hyperbolic metamaterial with ZnO/(Zn,Mg)O heterostructures. By adjusting the Mg content and layer thickness ratio, it establishes a clear framework for achieving and tuning the type I hyperbolic region via phonon resonances.
Julia Inglés‐Cerrillo   +9 more
wiley   +1 more source

Spatially Deterministic Integration of hBN Single‐Photon Emitters on SiN Waveguides Via Femtosecond Laser Processing

open access: yesAdvanced Optical Materials, EarlyView.
Femtosecond‐laser writing enables spatially deterministic integration of room‐temperature single‐photon emitters in hexagonal boron nitride onto pre‐fabricated silicon nitride waveguides. Confocal photoluminescence microscopy characterizes laser‐written defects, one of which exhibits narrow‐linewidth emission, pronounced polarization dependence, high ...
Daiki Yamashita   +3 more
wiley   +1 more source

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