Results 91 to 100 of about 594,035 (375)

Laser wavelength selector and output coupler [PDF]

open access: yes, 1970
Optical system eliminates displacement occurring when wavelengths are selected in multiple wavelength laser utilizing intracavity wavelength selection by first-order Littrow reflection of plane grating.
Hard, T. M.
core   +1 more source

Subwavelength index engineered surface grating coupler with sub-decibel efficiency for 220-nm silicon-on-insulator waveguides.

open access: yesOptics Express, 2015
Surface grating couplers are fundamental components in chip-based photonic devices to couple light between photonic integrated circuits and optical fibers.
D. Benedikovic   +10 more
semanticscholar   +1 more source

Phase Change Material‐Driven Tunable Metasurface for Adaptive Terahertz Sensing and Communication in 6G Perceptive Networks

open access: yesAdvanced Functional Materials, EarlyView.
This study explores the benefits of metasurfaces made from functional materials, highlighting their ability to be adapted and improved for various high‐frequency applications, including communications and sensing. It first demonstrates the potential of these functional material‐based metasurfaces to advance the field of sub‐THz perceptive networks ...
Yat‐Sing To   +5 more
wiley   +1 more source

Mode Optimization and Polarization Control in VCSELs with Sub-Wavelength Gratings

open access: yesIEEE Photonics Journal
We have demonstrated the integration of sub-wavelength gratings (SWG) into a 795 nm vertical cavity surface emitting laser (VCSEL) with inverse surface relief to achieve coordinated control of the mode and polarization. At a grating period of around 0.5 &
Yongli Wang   +4 more
doaj   +1 more source

Plasmon-Assisted Direction- and Polarization-Sensitive Organic Thin-Film Detector

open access: yesNanomaterials, 2020
Utilizing Bragg surface plasmon polaritons (SPPs) on metal nanostructures for the use in optical devices has been intensively investigated in recent years. Here, we demonstrate the integration of nanostructured metal electrodes into an ITO-free thin film
Michael J. Haslinger   +7 more
doaj   +1 more source

Design of Switchable On/Off Subpixels for Primary Color Generation Based on Molybdenum Oxide Gratings [PDF]

open access: gold, 2021
Gonzalo Santos   +6 more
openalex   +1 more source

Light trapping properties of cylindrical well diffraction gratings in solar cells: Computational calculations [PDF]

open access: yes, 2010
Light trapping using diffraction gratings is a promising approach to increasing absorption in solar cells. In this paper, the computationally calculated absorption enhancement expected from a diffraction grating consisting of a triangular array of ...
Luque López, Antonio   +3 more
core   +1 more source

Peptide Sequencing With Single Acid Resolution Using a Sub‐Nanometer Diameter Pore

open access: yesAdvanced Functional Materials, EarlyView.
To sequence a single molecule of Aβ1−42–sodium dodecyl sulfate (SDS), the aggregate is forced through a sub‐nanopore 0.4 nm in diameter spanning a 4.0 nm thick membrane. The figure is a visual molecular dynamics (VMD) snapshot depicting the translocation of Aβ1−42–SDS through the pore; only the peptide, the SDS, the Na+ (yellow/green) and Cl− (cyan ...
Apurba Paul   +8 more
wiley   +1 more source

Dosimetric study of the medical Agility grating system in radiotherapy of orbital lymphoma

open access: yesPrecision Radiation Oncology, 2019
Objective The spatial location of the orbital lymphoma target area is special; improving the quality of the orbital lymphoma plan and protecting the eye are important focus areas for doctors and physicists.
Shi Huifeng   +4 more
doaj   +1 more source

A Chirped Subwavelength Grating With Both Reflection and Transmission Focusing

open access: yesIEEE Photonics Journal, 2013
A planar lens composed of a chirped subwavelength grating (CSG) structure with high numerical aperture (NA) was designed and analyzed in this paper. The reflectivity, transmission, and phase were calibrated as a function of the grating dimension using ...
Xiaomin Lv   +7 more
doaj   +1 more source

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