Results 41 to 50 of about 1,084,194 (176)

Paraxial full-field cloaking [PDF]

open access: yes, 2015
We complete the `paraxial' (small-angle) ray optics cloaking formalism presented previously [Choi and Howell, Opt. Express 22, 29465 (2014)], by extending it to the full-field of light. Omnidirectionality is then the only relaxed parameter of what may be
Choi, Joseph S., Howell, John C.
core   +3 more sources

Photonic-dispersion neural networks for inverse scattering problems

open access: yesLight: Science & Applications, 2021
Inferring the properties of a scattering objective by analyzing the optical far-field responses within the framework of inverse problems is of great practical significance.
Tongyu Li   +12 more
semanticscholar   +1 more source

Air-core photonic band-gap fibers: the impact of surface modes

open access: yes, 2004
We study the dispersion and leakage properties for the recently reported low-loss photonic band-gap fiber by Smith et al. [Nature 424, 657 (2003)]. We find that surface modes have a significant impact on both the dispersion and leakage properties of the ...
Koshiba, M.   +2 more
core   +1 more source

Proper Motions and Internal Dynamics in the Core of the Globular Cluster M71

open access: yes, 2012
We have used Gemini North together with the NIRI-ALTAIR adaptive optics imager in the H and K bands to explore the core of the Galactic globular cluster M71 (NGC 6838). We obtained proper motions for 217 stars and have resolved its internal proper motion
Anderson   +14 more
core   +1 more source

Differential Optical Dispersion Spectroscopy

open access: yesIEEE Journal of Selected Topics in Quantum Electronics, 2012
Optical subtraction of dispersion spectra with differential optical dispersion spectroscopy is presented. Applications to direct comparison of gas samples and to optical subtraction of interfering spectral signature are demonstrated ...
Michal Nikodem, Gerard Wysocki
openaire   +3 more sources

Stabilization of three--dimensional light bullets by a transverse lattice in a Kerr medium with dispersion management

open access: yes, 2005
We demonstrate a possibility to stabilize three-dimensional spatiotemporal solitons ("light bullets") in self--focusing Kerr media by means of a combination of dispersion management in the longitudinal direction (with the group-velocity dispersion ...
Abdullaev   +51 more
core   +1 more source

Two-octave-spanning dispersion-controlled precision optics for sub-optical-cycle waveform synthesizers

open access: yes, 2014
Two-octave-spanning precision dispersive mirror systems are demonstrated, providing a new enabling technology for pulse-energy and bandwidth scaling of sub-cycle optical waveform synthesizers. We propose and characterize new dispersion management schemes
Shih-Hsuan Chia   +5 more
semanticscholar   +1 more source

Broad-Band Soft X-ray Polarimetry

open access: yes, 2009
We developed an instrument design capable of measuring linear X-ray polarization over a broad-band using conventional spectroscopic optics. A set of multilayer-coated flats reflects the dispersed X-rays to the instrument detectors.
Heilmann, Ralf   +3 more
core   +1 more source

Combining high-dispersion spectroscopy (HDS) with high contrast imaging (HCI): Probing rocky planets around our nearest neighbors [PDF]

open access: yes, 2015
Aims: In this work, we discuss a way to combine High Dispersion Spectroscopy and High Contrast Imaging (HDS+HCI). For a planet located at a resolvable angular distance from its host star, the starlight can be reduced up to several orders of magnitude ...
Birkby, Jayne   +8 more
core   +3 more sources

Machine studies during beam commissioning of the SPS-to-LHC transfer lines [PDF]

open access: yes, 2009
Through May to September 2008, further beam commissioning of the SPS-to-LHC transfer lines was performed. For the first time, optics and dispersion measurements were also taken in the last part of the lines, and into the LHC.
Agapov, I   +11 more
core  

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