Results 91 to 100 of about 43,891 (214)

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. The proposed SODG is a transmissive grating that exhibits high-efficiency refraction-like deflection for all angles, including large ...
arxiv  

Using Atomic Diffraction of Na from Material Gratings to Measure Atom-Surface Interactions [PDF]

open access: yesarXiv, 2003
In atom optics a material structure is commonly regarded as an amplitude mask for atom waves. However, atomic diffraction patterns formed using material gratings indicate that material structures also operate as phase masks. In this study a well collimated beam of sodium atoms is used to illuminate a silicon nitride grating with a period of 100 nm ...
arxiv  

High-efficiency 2D Grating Design for the Magneto-Optical Trap: Enhancing Intensity Balance and Reducing Optical Complexity [PDF]

open access: yesarXiv
Diffraction gratings integrated into an atomic, molecular, and optical (AMO) setup offer a compact and efficient route toward atom cooling and trapping, thus preparing magneto-optical traps (MOT) for insertion into future scalable quantum systems. Here, we propose and numerically validate a two-dimensional (2D) diffraction grating that satisfies the ...
arxiv  

Photonic crystal diffraction gratings

open access: yesOptics Express, 2001
It is shown from numerical results deduced from a rigorous theory of diffraction that diffraction gratings made with two-dimensional dielectric photonic crystals may present blazing effects. Since these structures are lossless, efficiencies of 100% in the -1st order can be obtained in polarized light. Efficiency curves in Littrow mount are shown.
openaire   +3 more sources

Analytical analysis of the decrease in the focal intensity of a femtosecond laser pulse caused by an imperfect surface of compressor diffraction gratings [PDF]

open access: yesarXiv
An analytical expression for the focal intensity of a laser pulse was obtained for an asymmetric out-of-plane compressor with gratings of arbitrary surface shape. The focal intensity is most strongly affected by the linear angular chirp caused by the spatial shift of different frequencies on the second and third gratings. The chirp can be eliminated by
arxiv  

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