Results 31 to 40 of about 8,132 (273)

Detecting cell death with optical coherence tomography and envelope statistics [PDF]

Journal of Biomedical Optics, 2011
<p>Currently no standard clinical or preclinical noninvasive method exists to monitor cell death based on morphological changes at the cellular level. In our past work we have demonstrated that quantitative high frequency ultrasound imaging can detect cell death in vitro and in vivo.
Golnaz, Farhat, Victor X D, Yang, Gregory J, Czarnota, Michael C, Kolios   +3 more
openaire   +2 more sources

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

Statistical analysis of motion contrast in optical coherence tomography angiography [PDF]

Journal of Biomedical Optics, 2015
11 pages, 11 ...
Cheng, Yuxuan, Guo, Li, Pan, Cong, Lu, Tongtong, Hong, Tianyu, Ding, Zhihua, Li, Peng   +6 more
openaire   +3 more sources

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

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

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

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

Surface imaging of metallic material fractures using optical coherence tomography [PDF]

, 2014
We demonstrate the capability of optical coherence tomography (OCT) to perform topography of metallic surfaces after being subjected to ductile or brittle fracturing.
Demian, D., Hutiu, G., Bradu, Adrian, Podoleanu, Adrian G.H., Duma, V.F.   +4 more
core   +1 more source

Generation and Propagation of a Hermite-Gaussian Correlated Schell-Model LG_0l Beam

Applied Sciences, 2019
A partially coherent beam under the combined action of a Hermite-Gaussian correlated function and vortex phase, named the HGCSMLG0l beam has been explored both theoretically and experimentally.
Xiaofeng Peng, Xingyuan Lu, Xianlong Liu, Chenliang Zhao, Rong Lin, Lin Liu, Yangjian Cai   +6 more
doaj   +1 more source