Results 31 to 40 of about 440,588 (315)

Simulation Analysis of a Wavefront Reconstruction of a Large Aperture Laser Beam

open access: yesSensors, 2023
In order to solve the problem of atmospheric influence on the far-field measurement of the quality of a laser beam, we proposed a direct wavefront measurement system based on the Hartmann detection principle, which can measure large apertures and high ...
Gangyu Wang   +4 more
doaj   +1 more source

Programmable Multimode Quantum Networks [PDF]

open access: yes, 2012
Entanglement between large numbers of quantum modes is the quintessential resource for future technologies such as the quantum internet. Conventionally the generation of multimode entanglement in optics requires complex layouts of beam-splitters and ...
Armstrong, Seiji   +6 more
core   +2 more sources

Discussion of a physical optics method and its application to absorbing smooth and slightly rough hexagonal prisms [PDF]

open access: yes, 2018
Three different mathematical solutions of a physical optics model for far field diffraction by an aperture due to Karczewski and Wolf are discussed. Only one of them properly describes diffraction by an aperture and can, by applying Babinet's principle ...
Collier, Christopher T.   +5 more
core   +2 more sources

Blind Restoration of Images Distorted by Atmospheric Turbulence Based on Deep Transfer Learning

open access: yesPhotonics, 2022
Removing space-time varying blur and geometric distortions simultaneously from an image is a challenging task. Recent methods (including physical-based methods or learning-based methods) commonly default the turbulence-degraded operator as a fixed ...
Yiming Guo   +5 more
doaj   +1 more source

Topological superfluid in one-dimensional spin-orbit coupled atomic Fermi gases

open access: yes, 2012
ARC Centre of Excellence for Quantum-Atom Optics, Centre for Atom Optics and Ultrafast Spectroscopy, Swinburne University of Technology, Melbourne 3122, AustraliaComment: 7 pages, 8 figures; submitted to Physical Review
Hu, Hui, Liu, Xia-Ji
core   +2 more sources

Formation and Optical Properties of Ag Nanoparticles in CaB4O7–Ag2O and CaB4O7–Gd2O3–Ag2O Tetraborate Glasses [PDF]

open access: yesЖурнал нано- та електронної фізики, 2014
Formation of Ag nanoparticles (NPs) in the near-surface layer of CaB4O7–Ag2O and CaB4O7 –Gd2O3–Ag2O glasses by annealing in vacuum or in air is reported.
V.T. Adamiv   +4 more
doaj  

Analysis and Correction of Smeared Image From Interline-Transfer CCD in Beam Quality Measurement

open access: yesIEEE Photonics Journal, 2022
The smear effect caused by light penetration of interline-transfer (IT) CCD in beam quality measurement (BQM) is detrimental and not analyzed pertinently. This report proposes a mathematical model and a correction method for the smeared image.
Jie Luo   +6 more
doaj   +1 more source

Record Low Arctic Stratospheric Ozone in Spring 2020: Measurements of Ground-Based Differential Optical Absorption Spectroscopy in Ny-Ålesund during 2017–2021

open access: yesRemote Sensing, 2023
The Arctic stratospheric ozone depletion event in spring 2020 was the most severe compared with previous years. We retrieved the critical indicator ozone vertical column density (VCD) using zenith scattered light differential optical absorption ...
Qidi Li   +5 more
doaj   +1 more source

Photosynthesis under far‐red light—evolutionary adaptations and bioengineering of light‐harvesting complexes

open access: yesFEBS Letters, EarlyView.
Phototrophs evolved light‐harvesting systems adapted for efficient photon capture in habitats enriched in far‐red radiation. A subset of eukaryotic pigment‐binding proteins can absorb far‐red photons via low‐energy chlorophyll states known as red forms.
Antonello Amelii   +8 more
wiley   +1 more source

A Regional Aerosol Model for the Oceanic Area around Eastern China Based on Aerosol Robotic Network (AERONET)

open access: yesRemote Sensing
A regional aerosol model can complement globally averaged models and improve the accuracy of atmospheric numerical models in local applications. This study established a seasonal aerosol model based on data from the Aerosol Robotic Network (AERONET) of ...
Shunping Chen   +8 more
doaj   +1 more source

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