Results 11 to 20 of about 7,620 (285)
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
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Low-Coherence Interferometric Imaging: Solution of the One-Dimensional Inverse Scattering Problem [PDF]
, 2004 Optical coherence tomography (OCT) is a non-invasive imaging technique based on the use of light sources exhibiting a low degree of coherence. Low coherence interferometric microscopes have been successful in producing internal images of thin pieces of ...
Chaubell, Mario Julián
core +1 more source
Propagation of a Vector Cosine-Gaussian Correlated Beam Through an Active GRIN Medium
IEEE Photonics Journal, 2017 This paper presents a convenient approach that uses the tensor method to study the propagation of a nonuniformly correlated electromagnetic Cosine-Gaussian Schell-model (ECGSM) beam through an active gradient-index (GRIN) medium.
Zitan Wang +4 more
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IEEE Photonics Journal, 2017 A stochastic beam generated by a recently introduced source of Schell type with rectangular multi-Gaussian spectral degree of coherence is shown to posses interesting novel features on propagation in uniaxial crystals.
Yonghua Mao, Zhangrong Mei
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Two-dimensional electron beam size measurements with x-ray heterodyne near field speckles
Physical Review Accelerators and Beams, 2022 In this paper we report on recent two-dimensional (2D) electron beam size measurements with a nonconventional synchrotron radiation interferometric technique based on x-ray heterodyne near field speckles (HNFS).
M. Siano +12 more
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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
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Optical Turbulence Profile in Marine Environment with Artificial Neural Network Model
Remote Sensing, 2022 Optical turbulence strongly affects different types of optoelectronic and adaptive optics systems. Systematic direct measurements of optical turbulence profiles [Cn2(h)] are lacking for many climates and seasons, particularly in marine environments ...
Cuicui Bi +7 more
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Self-Healing Properties of Partially Coherent Schell-Model Beams
IEEE Photonics Journal, 2017 Convolution expression for partially coherent beams that are partially blocked by an opaque obstacle is derived in detail in a paraxial $ABCD$ optical system.
Gaofeng Wu, Xiaoyan Pang
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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 +3 more
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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 +3 more
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