Results 31 to 40 of about 55,652 (271)

Correlation of Intensity Fluctuations for Scattering of a Partially Coherent Plane-Wave Pulse

Applied Sciences, 2019
We derived analytical expressions for the correlation of intensity fluctuations of a partially coherent Gaussian Schell-model plane-wave pulse scattered by deterministic and random media.
Yongtao Zhang, Chaoliang Ding, Liuzhan Pan, Yangjian Cai   +3 more
doaj   +1 more source

Spatial-Temporal Self-Focusing of Partially Coherent Pulsed Beams in Dispersive Medium

Applied Sciences, 2019
Partially coherent pulsed beams have many applications in pulse shaping, fiber optics, ghost imaging, etc. In this paper, a novel class of partially coherent pulsed (PCP) sources with circular spatial coherence distribution and sinc temporal coherence ...
Zhiguo Zhao, Chaoliang Ding, Yongtao Zhang, Liuzhan Pan   +3 more
doaj   +1 more source

Generating electromagnetic Schell-model sources using complex screens with spatially varying auto- and cross-correlation functions

Results in Physics, 2019
We present a method to generate any physically realizable electromagnetic Schell-model source. Our technique can be directly implemented on existing vector-beam generators that utilize spatial light modulators for coherence control, beam shaping, and ...
Milo W. Hyde, IV
doaj   +1 more source

Decoherence, fluctuations and Wigner function in neutron optics [PDF]

, 2002
We analyze the coherence properties of neutron wave packets, after they have interacted with a phase shifter undergoing different kinds of statistical fluctuations.
A Mariano, Badurek G, Benzi R, Benzi R, Bonse H, Born M, Brukner C, Comsa G, Facchi P, Facchi P, Fizeau H, Giulini D, Glauber R J, Golub R, Jacobson D L, Kaiser H, Kono N, M Suda, Manfredi G, Michelson A A, Michelson A A, Michelson A A, Namiki M, Namiki M, P Facchi, Rauch H, Rauch H, Rauch H, Rehácek J, S Pascazio, Schleich W P, Scully M O, Suda M, Vitali D, Vogel W, Watanabe S, Wigner E, Zurek W H   +37 more
core   +2 more sources

Controlling the Spatial Coherence of an Optical Source Using a Spatial Filter

Applied Sciences, 2018
This paper presents the theory for controlling the spectral degree of coherence via spatial filtering. Starting with a quasi-homogeneous partially coherent source, the cross-spectral density function of the field at the output of the spatial filter is ...
Milo W. Hyde
doaj   +1 more source

Brightness of Synchrotron radiation from Undulators and Bending Magnets [PDF]

, 2014
We consider the maximum of the Wigner distribution (WD) of synchrotron radiation (SR) fields as a possible definition of SR source brightness. Such figure of merit was originally introduced in the SR community by Kim.
Geloni, Gianluca, Kocharyan, Vitali, Saldin, Evgeni   +2 more
core   +1 more source

Shaping the far-zone intensity, degree of polarization, angle of polarization, and ellipticity angle using vector Schell-model sources

Results in Physics, 2019
This paper presents a method to control both the shape and polarization of a beam in the far field using a vector Schell-model source. Given a desired far-zone beam shape and polarization, and applying Fourier and statistical optics theory, we derive the
Milo W. Hyde, IV
doaj   +1 more source

Ghost Imaging with a Partially Coherent Beam Carrying Twist Phase in a Turbulent Ocean: A Numerical Approach

Applied Sciences, 2019
Ghost imaging (GI) is an indirect imaging approach that can retrieve an object’s image even in a harsh environment through measuring the fourth-order correlation function (FOCF) between the signal and idle optical paths.
Yonglei Liu, Xianlong Liu, Lin Liu, Fei Wang, Yuping Zhang, Yangjian Cai   +5 more
doaj   +1 more source

Combined information from Raman spectroscopy and optical coherence tomography for enhanced diagnostic accuracy in tissue discrimination [PDF]

, 2014
We thank the UK EPSRC for funding, the CR-UK/EPSRC/MRC/DoH (England) imaging programme, the European Union project FAMOS (FP7 ICT, contract no. 317744) and the European Union project IIIOS (FP7/2007-2013, contract no. 238802).
Ashok, P.C., Bellini, N., Dholakia, K., Herrington, C.S., Praveen, B.B., Riches, A.   +5 more
core   +1 more source

Partially Coherent Flat-Topped Beam Generated by an Axicon

Applied Sciences, 2019
The intensity distribution of a partially coherent beam with a nonconventional correlation function, named the multi-Gaussian Schell-model (MGSM) beam, focused by an axicon was investigated in detail.
Minghui Zhang, Xianlong Liu, Lina Guo, Lin Liu, Yangjian Cai   +4 more
doaj   +1 more source