Results 31 to 40 of about 5,245,882 (320)
At-wavelength characterization of X-ray wavefronts in Bragg diffraction from crystals
Journal of Synchrotron Radiation, 2023 The advent of next-generation synchrotron radiation sources and X-ray free-electron lasers calls for high-quality Bragg-diffraction crystal optics to preserve the X-ray beam coherence and wavefront.
Xianbo Shi +6 more
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Statistics of Microlensing Optical Depth
The Astrophysical Journal, 1995 We show that the statistical error, $ _ $, in estimating the optical depth, $ $, due to microlensing is substantially higher than the naive Poisson estimate: $ _ = \sqrt{ / N} $, where $N$ is the number of detections and $1.65 \leq \lsim 3$. We construct a ``microlensing map'' using an observationally well-constrained barred bulge model and ...
Han, Cheongho, Gould, Andrew
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Second-harmonic generation of temporally low-coherence light
APL Photonics, 2020 In this Letter, we study the second-harmonic (SH) generation of temporally low-coherence light using the statistical optics method. By introducing the statistical characteristics of low-coherence light into the nonlinear coupled wave equation, we predict
Xiaohui Zhao +11 more
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The role of clinical diagnosis criteria on the frequency of accommodative insufficiency [PDF]
International Journal of Ophthalmology, 2019 AIM: To estimate and compare the frequency of accommodative insufficiency (AI) within the same clinical population sample depending on the type of clinical criteria used for diagnosis.
María García-Montero +5 more
doaj +1 more source
Journal of Taibah University for Science, 2022 The objective of this work is to measure the influence of the Mth coherent state on the optics model of two atoms interacting with two-mode quantized field. Also, two atoms interacting together is included in this optics model.
Abdallah A. Nahla, Anas A. Othman
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Accelerating quantum optics experiments with statistical learning [PDF]
, 2019 Quantum optics experiments, involving the measurement of low-probability photon events, are known to be extremely time-consuming. We present a new methodology for accelerating such experiments using physically-motivated ansatzes together with simple ...
C. Cortes +3 more
semanticscholar +1 more source
Quantum statistical theory of optical phenomena [PDF]
Proceedings of the National Academy of Sciences, 1977 The purpose of this paper is to develop a density matrix formulation for optical phenomena that can be applied to both steady and transient states and to both resonance and off-resonance regions. To demonstrate the application, this theory has been applied to the steady-state one-photon and two-photon processes.
S H, Lin, H, Eyring
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On the Twistability of Partially Coherent, Schell-Model Sources
PhotonicsIn this paper, the problem of assessing the twistability of a given bona fide cross-spectral density is tackled for the class of Schell-model sources, whose shift-invariant degree of coherence is represented by a real and symmetric function, denoted as μ(
Riccardo Borghi
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Spatial Poincaré Plots as Descriptors of Speckle Pattern Second-Order Statistics
Journal of Biomedical Photonics & Engineering, 2017 It is demonstrated herein that the use of spatial Poincaré plots provides an efficient means to describe short and long-range correlations in the spatial structure of the measured intensity distribution of scattered coherent fields.
Anindya Majumdar, Sean J. Kirkpatrick
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Optics-less smart sensors and a possible mechanism of cutaneous vision in nature
, 2008 Optics-less cutaneous (skin) vision is not rare among living organisms, though its mechanisms and capabilities have not been thoroughly investigated.
A. B. Sichert +17 more
core +1 more source