Results 51 to 60 of about 1,099,801 (352)

Metamaterial Coatings for Broadband Asymmetric Mirrors [PDF]

open access: yes, 2006
We report on design and fabrication of nano-composite metal-dielectric thin film coatings with high reflectance asymmetries. Applying basic dispersion engineering principles to model a broadband and large reflectance asymmetry, we obtain a model ...
A. Chen   +20 more
core   +2 more sources

The connection between the peaks in velocity dispersion and star-forming clumps of turbulent galaxies

open access: yes, 2017
We present Keck/OSIRIS adaptive optics observations with 150-400 pc spatial sampling of 7 turbulent, clumpy disc galaxies from the DYNAMO sample ($0 ...
Abraham, R.   +7 more
core   +1 more source

Ultrabroadband nonlinear optics in nanophotonic periodically poled lithium niobate waveguides [PDF]

open access: yesOptica, 2019
Quasi-phasematched interactions in waveguides with quadratic nonlinearities enable highly efficient nonlinear frequency conversion. In this article, we demonstrate the first generation of devices that combine the dispersion-engineering available in ...
M. Jankowski   +8 more
semanticscholar   +1 more source

Reconstructing Chromatic-Dispersion Relations and Predicting Refractive Indices Using Text Mining and Machine Learning

open access: yesJournal of Chemical Information and Modeling, 2022
Predicting the properties of materials prior to their synthesis is of great significance in materials science. Optical materials exhibit a large number of interesting properties that make them useful in a wide range of applications, including optical ...
Jiuyang Zhao, J. Cole
semanticscholar   +1 more source

Space-time wave packets localized in all dimensions

open access: yesNature Communications, 2022
Propagation-invariant wave packets confined in space and time can be useful for optical sensing, imaging, and nonlinear and quantum optics. Here the authors demonstrate control over the angular dispersion of optical wave packets in two-transverse ...
Murat Yessenov   +6 more
doaj   +1 more source

Nonlinear wavelength conversion in photonic crystal fibers with three zero dispersion points

open access: yes, 2010
In this theoretical study, we show that a simple endlessly single-mode photonic crystal fiber can be designed to yield, not just two, but three zero-dispersion wavelengths.
A. Podlipensky   +8 more
core   +1 more source

A SHARP view of H0LiCOW: H0 from three time-delay gravitational lens systems with adaptive optics imaging [PDF]

open access: yesMonthly notices of the Royal Astronomical Society, 2019
We present the measurement of the Hubble constant, H0, with three strong gravitational lens systems. We describe a blind analysis of both PG 1115+080 and HE 0435−1223 as well as an extension of our previous analysis of RXJ 1131−1231.
G. Chen   +22 more
semanticscholar   +1 more source

Unique Huygens-Fresnel electromagnetic transportation of chiral Dirac wavelet in topological photonic crystal

open access: yesNature Communications, 2023
Light propagates in various ways depending on environment, including uniform medium, surface/interface and photonic crystals, which appears ubiquitously in daily life and has been exploited for advanced optics technology.
Xing-Xiang Wang   +5 more
doaj   +1 more source

Demonstration of optically modulated dispersion forces

open access: yes, 2007
We report the first experiment on the optical modulation of dispersion forces through a change of the carrier density in a Si membrane. For this purpose a high-vacuum based atomic force microscope and excitation light pulses from an Ar laser are used ...
Chen, F.   +3 more
core   +1 more source

(INVITED) Methods for determining the refractive indices and thermo-optic coefficients of chalcogenide glasses at MIR wavelengths

open access: yesOptical Materials: X, 2019
Chalcogenide glasses have attracted much attention for the realization of photonic components owing to their outstanding optical properties in the mid-infrared (MIR) region. However, relatively few refractive index dispersion data are presently available
Y. Fang   +9 more
doaj   +1 more source

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