Results 51 to 60 of about 594,035 (375)

Design study of time-preserving grating monochromators for ultrashort pulses in the extreme-ultraviolet and soft X-rays [PDF]

open access: yes, 2017
The design of grating-based instruments to handle and condition coherent ultrafast pulses in the extreme-ultraviolet is discussed. The main application of such instruments is the monochromatization of high-order laser harmonics and free-electron-laser ...
Fabris, Nicola   +3 more
core   +3 more sources

Fabrication and Diffraction Efficiency of a Large-format, Replicated X-Ray Reflection Grating

open access: yesAstrophysical Journal, 2018
We present the methodology used to fabricate an X-ray reflection grating and describe a technique for grating replication. Further, we present the experimental procedure and results of a study to measure the diffraction efficiency of a replicated X-ray ...
D. Miles   +9 more
semanticscholar   +1 more source

Efficient photon collection from a nitrogen vacancy center in a circular bullseye grating. [PDF]

open access: yesNano letters (Print), 2014
Efficient collection of the broadband fluorescence from the diamond nitrogen vacancy (NV) center is essential for a range of applications in sensing, on-demand single photon generation, and quantum information processing.
Luozhou Li   +9 more
semanticscholar   +1 more source

Efficiency Measurements and Installation of a New Grating for the OSIRIS Spectrograph at Keck Observatory

open access: yes, 2014
OSIRIS is a near-infrared integral field spectrograph operating behind the adaptive optics system at W. M. Keck Observatory. While OSIRIS has been a scientifically productive instrument to date, its sensitivity has been limited by a grating efficiency ...
Adkins, Sean M.   +9 more
core   +1 more source

Quantum Emitters in Hexagonal Boron Nitride: Principles, Engineering and Applications

open access: yesAdvanced Functional Materials, EarlyView.
Quantum emitters in hexagonal boron nitride have emerged as a promising candidate for quantum information science. This review examines the fundamentals of these quantum emitters, including their level structures, defect engineering, and their possible chemical structures.
Thi Ngoc Anh Mai   +8 more
wiley   +1 more source

Casimir interaction between a sphere and a grating

open access: yes, 2015
We derive the explicit expression for the Casimir energy between a sphere and a 1D grating, in terms of the sphere and grating reflection matrices, and valid for arbitrary materials, sphere radius, and grating geometric parameters.
Antezza, Mauro   +3 more
core   +3 more sources

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

open access: yesAdvanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner   +9 more
wiley   +1 more source

Miniaturized Optical Encoder with Micro Structured Encoder Disc

open access: yesApplied Sciences, 2019
A novel optical incremental and absolute encoder based on an optical application-specific integrated circuit (opto-ASIC) and an encoder disc carrying micro manufactured structures is presented.
Jonathan Seybold   +6 more
doaj   +1 more source

Phenomenon of Electromagnetic Field Resonance in Metal and Dielectric Gratings and Its Possible Practical Applications

open access: yesCondensed Matter, 2020
Calculations of the field distribution in the structure of the dielectric substrate/buffer layer/volume phase grating/analyzed medium were performed.
Stefano Bellucci   +3 more
doaj   +1 more source

Fiber Bragg Grating Sensors for Harsh Environments

open access: yesItalian National Conference on Sensors, 2012
Because of their small size, passive nature, immunity to electromagnetic interference, and capability to directly measure physical parameters such as temperature and strain, fiber Bragg grating sensors have developed beyond a laboratory curiosity and are
S. Mihailov
semanticscholar   +1 more source

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