Results 61 to 70 of about 128,599 (282)

Regenerated gratings [PDF]

Journal of the European Optical Society-Rapid Publications, 2009
Strong regenerated gratings with a maximum grating strength exceeding (40–50) dB are fabricated inside an optical fibre by bulk macro thermal processing ∼ 900°C using a UV-laser seeded Bragg grating. Further annealing between 1000°C and 1100°C leads to a
Canning John, Bandyopadhyay Somnath, Stevenson Michael, Biswas Palas, Fenton Jacob, Aslund Mattias   +5 more
doaj   +1 more source

Positive‐Tone Nanolithography of Antimony Trisulfide with Femtosecond Laser Wet‐Etching

Advanced Functional Materials, EarlyView.
A butyldithiocarbamic acid (BDCA) etchant is used to fabricate various micro‐ and nanoscale structures on amorphous antimony trisulfide (a‐Sb2S3) thin film via femtosecond laser etching. Numerical analysis and experimental results elucidate the patterning mechanism on gold (reflective) and quartz (transmissive) substrates.
Abhrodeep Dey, Uwe Hübner, Albane Benardais, Xiaofei Wu, Andrea Dellith, Jan Dellith, Torsten Wieduwilt, Henrik Schneidewind, Markus A Schmidt, Virginie Nazabal, Volker Deckert, Jer‐Shing Huang, Wei Wang   +12 more
wiley   +1 more source

Fabrication of high quality sub-micron Au gratings over large areas with pulsed laser interference lithography for SPR sensors

, 2012
Metallic gratings were fabricated using high energy laser interference lithography with a frequency tripled Nd:YAG nanosecond laser. The grating structures were first recorded in a photosensitive layer and afterwards transferred to an Au film.
Arriola, Alexander, Fuerbach, Alexander, Olaizola, Santiago M., Perez, Noemi, Rodriguez, Ainara, Tavera, Txaber, Withford, Michael J.   +6 more
core   +1 more source

Stimulus-specific mechanisms of visual short-term memory [PDF]

, 1991
The retention of spatial information in visual short-term memory was assessed by measuring spatial frequency discrimination thresholds with a two-interval forced-choice task varying the time interval between the two gratings to be compared. The memory of
Asplund, R., Dyrnes, S., Greenlee, Mark W., Magnussen, S.   +3 more
core   +1 more source

An All‐Optical Driven Bio‐Photovoltaic Interface for Active Control of Live Cells

Advanced Functional Materials, EarlyView.
Bio‐photovoltaic Interface (BIO‐PV‐I) for live cell manipulation is presented. BIO‐PV‐I can be activated non‐invasively and remotely to control the spatial motility, adhesion, and morphology of cells adhering to it. BIO‐PV‐I uses a patterned light‐induced electric potential in iron‐doped lithium niobate crystals whose light‐driven and reversible nature,
Lisa Miccio, Martina Mugnano, Valentina Marchesano, Alejandro Calabuig, Zhe Wang, Gennaro Giordano, Francesca Borrelli, Simonetta Grilli, Pietro Ferraro   +8 more
wiley   +1 more source

Remarkable Color Gamut Enhancement of Dye Lacquers Using Corrugated Surfaces

Advanced Photonics Research, 2022
The visual appearance of any colorized object is usually determined by the spectral absorption of either pigments or dyes. One can however also colorize objects with structural colors that typically have an iridescent appearance, as seen on many beetles.
Sebastian Mader, Olivier J. F. Martin
doaj   +1 more source

Polymer-Based High Diffraction Efficiency and High Resolution Volume Holographic Transmission Gratings

Chemosensors, 2022
We report on the optical characterization of very high-efficiency and high-resolution holographic volume phase transmission gratings. The gratings are recorded in a new photo-polymerizable mixture made by epoxy-resin and multi-acrylate.
Riccardo Castagna, Andrea Di Donato, Oriano Francescangeli, Daniele Eugenio Lucchetta   +3 more
doaj   +1 more source

Double grating formation in anisotropic photorefractive crystals [PDF]

, 1992
Double gratings form in anisotropic photorefractive crystals when two plane waves intersecting inside the crystal have both extraordinary and ordinary wave components.
Li, Hsin-Yu, Psaltis, Demetri
core  

Three‐dimensional Antimony Sulfide Based Flat Optics

Advanced Functional Materials, EarlyView.
This work presents the development of a grayscale electron beam lithography (g‐EBL) method for fabricating antimony trisulfide (Sb2S3) nanostructures with customizable 3D profiles. The refractive index of g‐EBL patterned Sb2S3 is determined based on the synergy of genetic algorithm and transfer matrix method.
Wei Wang, Uwe Hübner, Anne Gärtner, Tao Chen, Joseph Köbel, Franka Jahn, Daniel Repp, Abhrodeep Dey, Henrik Schneidwind, Andrea Dellith, Jan Dellith, Torsten Wieduwilt, Matthias Zeisberger, Tanveer Ahmed Shaik, Astrid Bingel, Markus A. Schmidt, Jer‐Shing Huang, Ulf Peschel, Volker Deckert   +18 more
wiley   +1 more source

Excitation of Surface Plasmons Using Tilted Planar-Waveguide Bragg Gratings

IEEE Photonics Journal, 2011
We present a planar-integrated optical surface plasmon refractometer. The fabricated device operates by grating-matched coupling between a core waveguide mode and a set of hybrid plasmon-dielectric modes of a much wider integrated structure.
C. Holmes, K. R. Daly, I. J. G. Sparrow, J. C. Gates, G. D'Alessandro, P. G. R. Smith   +5 more
doaj   +1 more source