Results 61 to 70 of about 6,648 (171)
Laser &Photonics Reviews, EarlyView.Femtosecond‐laser inscription enables precise positioning of fiber Bragg gratings within the cladding, introducing new spatial and modal design freedoms. Auxiliary‐waveguide, near‐core evanescent‐field, and direct cladding‐mode‐excitation architectures provide complementary pathways toward multiparameter, vector, distributed, and environmentally ...
Koustav Dey +3 more
wiley +1 more source
Pupil Plane Phase Apodization [PDF]
, 2018 Phase apodization coronagraphs are implemented in a pupil plane to create a dark hole in the science camera focal plane. They are successfully created as "Apodizing Phase Plates" (APPs) using classical optical manufacturing, and as "vector-APPs" using ...
Codona, Johanan L. +2 more
core +1 more source
Sensors, 2019 Nondestructive testing of metallic objects that may contain embedded defects of different sizes is an important application in many industrial branches for quality control. Most of these techniques allow defect detection and its approximate localization,
Hossam Selim +5 more
doaj +1 more source
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 +4 more
wiley +1 more source
Laser &Photonics Reviews, EarlyView.An integrated atom‐clad waveguide enables chip‐scale blue light generation (420 nm) via a two‐photon ladder transition in rubidium vapor at temperatures up to 240°C. The observed bell‐shaped intensity profile reveals a competitive interplay between local photon generation and macroscopic vapor reabsorption.
Arieh Grosman +4 more
wiley +1 more source
Enhancing Conventional SAR Change Detection Performance with Apodization
, 2020 Conventional SAR refers to systems with small fractional bandwidth and short relative aperture whereas non-conventional SAR refers to systems with large fractional bandwidth and long relative aperture.
Viet T. Vu +5 more
core +1 more source
Macromolecular Symposia, EarlyView.ABSTRACT Oil palm empty fruit bunches (OPEFB), a byproduct of the palm oil industry, have great potential in the circular economy, particularly for composite material production. Multilayer plastic waste from the bottled water industry presents significant environmental challenges.
Siti Mutia Mawaddah +3 more
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 +4 more
wiley +1 more source
Design of Acoustical Bessel-Like Beam Formation by a Pupil Masked Soret Zone Plate Lens
Sensors, 2019 The image performance of acoustic and ultrasound sensors depends on several fundamental parameters such as depth of focus or lateral resolution. There are currently two different types of acoustic diffractive lenses: those that form a diffraction-limited
Daniel Tarrazó-Serrano +5 more
doaj +1 more source
Oppositely Charged Homopolypeptides Form Ordered Helix Assemblies With Hierarchical Structure
Small, EarlyView.Hexagaonal and square assembly of polyarginine alfa‐helices formed in highly ordered polyarginine/polyaspartic acid complexes. The helices exhibit additional periodic staggering along their helical axis. ABSTRACT Oppositely charged polyelectrolytes are known to form polyelectrolyte complexes.
Ekaterina Buvalaia +10 more
wiley +1 more source