Results 21 to 30 of about 584,758 (318)

Tapered multicore fibers for energy-scalable fiber laser systems [PDF]

open access: yesEPJ Web of Conferences, 2022
With active multicore fibers (MCFs), many parallel amplifying waveguides can be densely assembled into a common glass cladding. A tapered fiber geometry applied to MCFs enhances the power and energy scalability of these systems by increasing the doped ...
Aleshire Christopher   +10 more
doaj   +1 more source

Multifunctional contamination-resistant coatings [PDF]

open access: yesEPJ Web of Conferences, 2019
Surface contaminations can critically affect the performance of optical surfaces, in particular with respect to light scattering, optical losses, and laser stability.
Felde Nadja   +3 more
doaj   +1 more source

Manipulating dc currents with bilayer bulk natural materials [PDF]

open access: yes, 2014
The principle of transformation optics has been applied to various wave phenomena (e.g., optics, electromagnetics, acoustics and thermodynamics). Recently, metamaterial devices manipulating dc currents have received increasing attention which usually ...
Han, Tiancheng   +6 more
core   +1 more source

Analysis of influence on the solar simulator light source off-focus to the spot

open access: yesJournal of Hebei University of Science and Technology, 2015
Aiming at focusing-type solar simulator, the paper researches the relationship between the defocusing amount and the facula irradiance. With the optical system of focusing-type solar simulator as research object, simulation is conducted based on a short ...
Jiayu ZHANG   +3 more
doaj   +1 more source

Coherence-controlled transparency and far-from-degenerate parametric gain in a strongly-absorbing Doppler-broadened medium [PDF]

open access: yes, 2000
An inversionless gain of anti-Stokes radiation above the oscillation threshold in an optically-dense far-from-degenerate double-Lambda Doppler-broadened medium accompanied by Stokes gain is predicted.
A. K. Popov   +11 more
core   +2 more sources

Polarization Snapshot Imaging Spectrometer for Infrared Range

open access: yesPhotonics, 2023
Infrared imaging spectrometers detect and identify targets by collecting spectral and image information. However, when detecting small temperature differences and dynamic targets, the accuracy of infrared detection is reduced, the traditional scanning ...
Hongcheng Tao   +10 more
doaj   +1 more source

Optical path difference evaluation of laser-soldered optical components [PDF]

open access: yesJournal of the European Optical Society-Rapid Publications, 2015
We present Solderjet Bumping, a laser-based soldering process, as an all inorganic joining technique for optical materials and mechanical support structures.
Burkhardt T.   +3 more
doaj   +1 more source

Optical Design and Investigation of a Dual-Interference Channels and Bispectrum Static Fourier-Transform Imaging Spectrometer Based on Stepped Micro-Mirror

open access: yesIEEE Access, 2021
We demonstrate a novel tempo-spatial mixed-modulation Fourier-transform infrared imaging spectrometer. The static interference channel based on a stepped micro-mirror contributes a compact system with high stability.
Jun Ren   +7 more
doaj   +1 more source

Highly efficient frequency conversion with bandwidth compression of quantum light

open access: yesNature Communications, 2017
In quantum information technology the output of one element often does not match the required frequency and bandwidth of the input of the next element. Here, Allgaieret al.
Markus Allgaier   +8 more
doaj   +1 more source

Characterization of diffractive bifocal intraocular lenses

open access: yesScientific Reports, 2023
Multifocal intraocular lenses incorporate a variety of design considerations, including dimensioning of the base monofocal shape and the diffraction grating.
Damian Mendroch   +2 more
doaj   +1 more source

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