Results 1 to 10 of about 1,741,957 (288)

Linear algebraic theory of partial coherence: discrete fields and measures of partial coherence [PDF]

open access: yesJournal of the Optical Society of America A: Optics and Image Science, and Vision, 2002
A linear algebraic theory of partial coherence is presented that allows precise mathematical definitions of concepts such as coherence and incoherence. This not only provides new perspectives and insights but also allows us to employ the conceptual and algebraic tools of linear algebra in applications. We define several scalar measures of the degree of
Ozaktas, H., M.   +2 more
exaly   +10 more sources

Linear algebraic theory of partial coherence: continuous fields and measures of partial coherence [PDF]

open access: yesJournal of the Optical Society of America A: Optics and Image Science, and Vision, 2016
This work presents a linear algebraic theory of partial coherence for optical fields of continuous variables. This approach facilitates use of linear algebraic techniques and makes it possible to precisely define the concepts of incoherence and coherence in a mathematical way.
Talha Cihad Gulcu
exaly   +8 more sources

Partial Recovery of Coherence Loss in Coherence-Assisted Transformation

open access: yesEntropy, 2023
Coherence-assisted transformation under incoherent operations is discussed. For transformation from the pure state to the mixed state, we show that the coherence loss can be partially recovered by adding auxiliary coherent states.
Zhaobing Fan, Zewen Shan, Haitao Ma
doaj   +5 more sources

Modelling of Phase Contrast Imaging with X-ray Wavefront Sensor and Partial Coherence Beams [PDF]

open access: yesSensors, 2020
The Hartmann wavefront sensor is able to measure, separately and in absolute, the real δ and imaginary part β of the X-ray refractive index. While combined with tomographic setup, the Hartman sensor opens many interesting opportunities behind the direct ...
Ginevra Begani Provinciali   +3 more
doaj   +2 more sources

Recovery of undamaged electron-density maps in the presence of damage-induced partial coherence in single-particle imaging [PDF]

open access: yesIUCrJ, 2020
Resolving the electronic structure of single biological molecules in their native state was among the primary motivations behind X-ray free-electron lasers. The ultra-short pulses they produce can outrun the atomic motion induced by radiation damage, but
Alexander Kozlov   +5 more
doaj   +2 more sources

Comparison of two novel swept-source optical coherence tomography devices to a partial coherence interferometry-based biometer [PDF]

open access: yesScientific Reports, 2021
To evaluate the repeatability and agreement of corneal and biometry measurements obtained with two swept-source optical coherence tomography (SSOCT) and a partial coherence interferometry-based device. This is a cross-sectional study. Forty-eight eyes of
Tommy C. Y. Chan   +5 more
doaj   +2 more sources

Comparison between spectral-domain optical coherence tomography-based and partial coherence interferometry-based biometry [PDF]

open access: yesScientific Reports
We compared axial length (AL) measurements using spectral-domain optical coherence tomography (SD-OCT)-based and partial coherence interferometry (PCI)-based biometry in eyes with various chorioretinal diseases.
So Min Ahn   +3 more
doaj   +2 more sources

Partial coherence control delivers skyrmionic topological resilience and transitions [PDF]

open access: yesNature Communications
Optical skyrmions have recently unlocked topological quasiparticle textures of light, rising in prominence for next-generation ultra-robust information processing. However, to date, their study has been mainly confined to coherent laser fields.
Yonglei Liu   +7 more
doaj   +2 more sources

Comparison of spectral-domain optical coherence tomography biometry measurements with partial coherence interferometry optical biometry [PDF]

open access: yesBMC Ophthalmology
Purpose This study aimed to evaluate the agreement and interchangeability between a spectral-domain optical coherence tomography (SD-OCT)-based biometer (REVO FC) and a partial coherence interferometry (PCI) device (AL Scan).
Konuralp Yakar, Gökhan Özgür
doaj   +2 more sources

Comparison of two swept-source optical coherence tomography biometers and a partial coherence interferometer. [PDF]

open access: yesPLoS ONE, 2019
PurposeTo compare biometry and prediction of postoperative refractive outcomes obtained by two swept-source optical coherence tomography (SS-OCT) biometers (IOLMaster 700 and Argos), and a partial coherence interferometry (IOLMaster ver 5.4 ...
Chan Min Yang   +3 more
doaj   +2 more sources

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