Results 31 to 40 of about 59,189 (312)

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, Zhi Qiao, Paresh Pradhan, Peifan Liu, Lahsen Assoufid, Kwang-Je Kim, Yuri Shvyd'ko   +6 more
doaj   +1 more source

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, Beatriz Antona, Ana Rosa Barrio, Carmen Nieto-Zayas, Irene Martínez-Alberquilla, José Luis Hernández-Verdejo   +5 more
doaj   +1 more source

On the Twistability of Partially Coherent, Schell-Model Sources

Photonics
In 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
doaj   +1 more source

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
doaj   +1 more source

Effect of Mth coherent state on the interaction between two two-level atoms and two-mode quantized field

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
doaj   +1 more source

Symmetries of wave equations of statistical optics [PDF]

, 2008
The Lie method is used to derive the symmetry group of various sets of wave equations, and Noether's theorem is applied to find conservation laws of the wave equations.
Mitofsky, Andrea M.
core   +2 more sources

Object-oriented Matlab adaptive optics toolbox [PDF]

, 2014
Object-Oriented Matlab Adaptive Optics (OOMAO) is a Matlab toolbox dedicated to Adaptive Optics (AO) systems. OOMAO is based on a small set of classes representing the source, atmosphere, telescope, wavefront sensor, Deformable Mirror (DM) and an imager ...
Correia, C, Conan, Rodolphe, R. Conan, C. Correia   +3 more
core   +1 more source

Statistical design in integrated optics [PDF]

, 2009
The 'design on tolerance' concept in integrated optic is introduced. The aim of this technique is to design a circuit that is robust to statistical variations of the parameters due to technological processes and aging.
MORICHETTI, FRANCESCO, MELLONI, ANDREA IVANO, CANCIAMILLA, ANTONIO, Francesco Morichetti, Arjen Bakker, D. Roncelli, Antonio Canciamilla, A. Bakker, Davide Roncelli, Andrea Melloni   +9 more
core   +1 more source

Propagation of Correlation Singularities of a Partially Coherent Laguerre–Gaussian Electromagnetic Beam in a Uniaxial Crystal

IEEE Photonics Journal, 2017
The correlation singularities of a partially coherent Laguerre–Gaussian (LG) electromagnetic beam in a uniaxial crystal is shown to possess interesting evolution behavior. The analytical formula for the cross-spectral density matrix of a partially
Yongtao Zhang, Liuzhan Pan, Yangjian Cai
doaj   +1 more source

Statistical methods in quantum optics 2: non-classical fields [PDF]

, 2007
Statistical Methods in Quantum Optics 2 - Non-Classical Fields continues the development of the methods used in quantum optics to treat open quantum systems and their fluctuations.
Carmichael, H J
core   +1 more source