Results 51 to 60 of about 7,907,205 (365)

The optical near-field: super-resolution imaging with structural and phase correlation

open access: yesNanophotonics, 2014
An overview of near-field optics is presented with a focus on the fundamental advances that have been made in the field since its inception 30 years ago. A focus is placed on the advancements that have been achieved in instrumentation.
Lewis Aaron   +9 more
doaj   +1 more source

Tuning Knobs for the NLC Final Focus

open access: yes, 2002
Compensation of optics errors at the Interaction Point (IP) is essential for maintaining maximum luminosity at the NLC. Several correction systems (knobs) using the Final Focus sextupoles have been designed to provide orthogonal compensation of linear ...
Nosochkov, Y.   +4 more
core   +1 more source

Optical elements for dynamically broadening the focus of micro-focus optics at synchrotron x-ray sources [PDF]

open access: yesAIP Conference Proceedings, 2019
Third generation synchrotron radiation sources offer the possibility of using high demagnification ratio optics to achieve a micro-focused X-ray beam profile of size less than one micrometre size. This is highly advantageous for a variety of experiments.
José Trincão   +6 more
openaire   +2 more sources

Ray pencils of general divergency

open access: yesAfrican Vision and Eye Health, 2009
That a thin refracting element can have a dioptric power which is asymmetric immediately raises questions at the fundamentals of linear optics.  In optometry the important concept of vergence, in particular, depends on the concept of a pencil of rays ...
W. F. Harris
doaj   +1 more source

Tuning of large piezoelectric response in nanosheet-buffered lead zirconate titanate films on glass substrates

open access: yesScientific Reports, 2017
Renewed interest has been witnessed in utilizing the piezoelectric response of PbZr0.52Ti0.48O3 (PZT) films on glass substrates for applications such as adaptive optics.
Anuj Chopra   +5 more
doaj   +1 more source

Probing half β_{y}^{*} optics in the Accelerator Test Facility 2

open access: yesPhysical Review Accelerators and Beams, 2016
A nanometer beam size at the interaction point (IP) is required for future linear colliders to achieve the desired rate of particle collisions. KEK Accelerator Test Facility 2 (ATF2), a scaled down implementation of the linear collider beam delivery ...
M. Patecki   +10 more
doaj   +1 more source

Construction of an optical test-bed for eLISA [PDF]

open access: yes, 2016
In the planned eLISA mission a key part of the system is the optical bench that holds the interferometers for reading out the inter-spacecraft distance and the test mass position.
Danzmann, K.   +11 more
core   +3 more sources

Active meta-optics and nanophotonics with halide perovskites [PDF]

open access: yesApplied Physics Reviews, 2019
Meta-optics based on optically resonant all-dielectric structures is a rapidly developing research area driven by its potential applications for low-loss efficient metadevices.
A. Berestennikov   +3 more
semanticscholar   +1 more source

High-Efficiency Spin-Related Vortex Metalenses

open access: yesNanomaterials, 2021
In this paper, one spin-selected vortex metalens composed of silicon nanobricks is designed and numerically investigated at the mid-infrared band, which can produce vortex beams with different topological charges and achieve different spin lights ...
Wei Wang   +9 more
doaj   +1 more source

Takagi-Taupin Description of X-ray Dynamical Diffraction from Diffractive Optics with Large Numerical Aperture

open access: yes, 2007
We present a formalism of x-ray dynamical diffraction from volume diffractive optics with large numerical aperture and high aspect ratio, in an analogy to the Takagi-Taupin equations for strained single crystals.
A. Authier   +15 more
core   +1 more source

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