Results 1 to 10 of about 1,177,574 (384)

Computational Three-Dimensional Imaging System via Diffraction Grating Imaging with Multiple Wavelengths [PDF]

open access: yesSensors, 2021
This paper describes a computational 3-D imaging system based on diffraction grating imaging with laser sources of multiple wavelengths. It was proven that a diffraction grating imaging system works well as a 3-D imaging system in our previous studies ...
Jae-Young Jang, Hoon Yoo
doaj   +2 more sources

Angular alignment and fidelity of neutron phase-gratings for improved interferometer fringe visibility [PDF]

open access: yesAIP Advances, 2019
The recent development of phase-grating moiré neutron interferometry promises a wide range of impactful experiments from dark-field imaging of material microstructure to precise measurements of fundamental constants.
B. Heacock   +8 more
doaj   +2 more sources

Image Enhancement of Computational Reconstruction in Diffraction Grating Imaging Using Multiple Parallax Image Arrays [PDF]

open access: yesSensors, 2020
This paper describes an image enhancement method of computational reconstruction for 3-D images with multiple parallax image arrays in diffraction grating imaging. A 3-D imaging system via a diffraction grating provides a parallax image array (PIA) which
Jae-Young Jang, Hoon Yoo
doaj   +2 more sources

Emerging beam resonances in atom diffraction from a reflection grating [PDF]

open access: yesPhys. Rev. Lett. 104, 240404 (2010), 2010
We report on the observation of emerging beam resonances, well known as Rayleigh-Wood anomalies and threshold resonances in photon and electron diffraction, respectively, in an atom-optical diffraction experiment.
Bum Suk Zhao   +3 more
core   +3 more sources

Large bandwidth, highly efficient optical gratings through high index materials [PDF]

open access: yes, 2008
We analyze the diffraction characteristics of dielectric gratings that feature a high index grating layer, and devise, through rigorous numerical calculations, large bandwidth, highly efficient, high dispersion dielectric gratings in reflection ...
Baldry   +17 more
core   +5 more sources

Measurement of atomic diffraction phases induced by material gratings [PDF]

open access: yes, 2005
Atom-surface interactions can significantly modify the intensity and phase of atom de Broglie waves diffracted by a silicon nitride grating. This affects the operation of a material grating as a coherent beam splitter.
Alexander D. Cronin   +4 more
core   +2 more sources

Transmissive Suppressed-Order Diffraction Grating (SODG) [PDF]

open access: yesarXiv, 2019
We present a novel type of Suppressed-Order Diffraction Grating(SODG). An SODG is a diffraction grating whose diffraction orders have all been suppressed except one that is selected to provide electromagnetic deflection.
Caloz, Christophe   +2 more
core   +2 more sources

Self-enhanced diffraction from fixed photorefractive gratings during coherent reconstruction [PDF]

open access: bronze, 1993
We explore, theoretically and experimentally, the effects of self-enhancement (or self-depletion) of the diffraction which occurs during coherent reconstruction from fixed photorefractive gratings.
Kewitsch, Anthony   +3 more
core   +3 more sources

Direct Writing of Quasi-Sinusoidal and Blazed Surface Relief Optical Transmission Gratings in Bi12GeO20, Er: LiNbO3 and Er: Fe: LiNbO3 Crystals by Nitrogen Ion Microbeams of 5 MeV and 10.5 MeV Energy [PDF]

open access: yesSensors
High diffraction efficiency optical transmission gratings with quasi-sinusoidal and saw-tooth surface relief profiles were fabricated in Bi12GeO20, Er: LiNbO3 and Er: Fe: LiNbO3 crystals by ion beam implantation.
István Bányász   +7 more
doaj   +2 more sources

Technologies for Fabricating Large-Size Diffraction Gratings [PDF]

open access: yesSensors
Large-size diffraction gratings have played an important role in modern scientific fields such as inertial confinement fusion, large-aperture astronomical telescopes, and high-precision immersion lithography machines with long-stroke displacement stages.
Changfeng Shao, Xinghui Li
doaj   +2 more sources

Home - About - Disclaimer - Privacy