Results 41 to 50 of about 107,392 (290)
Holographic beam shaping of partially coherent light
Optics Letters, 2022 We present an algorithmic approach for holographic shaping of partially coherent light, which is described by a mode expansion containing thousands of individual modes. Using gradient descent and algorithmic differentiation, our algorithm is able to find a set of axially separated phase patterns such that each mode undergoes an individually optimized ...
Nicolas Barré, Alexander Jesacher
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Partially Coherent Ptychography by Gradient Decomposition of the Probe
, 2017 Coherent ptychographic imaging experiments often discard over 99.9 % of the flux from a light source to define the coherence of an illumination. Even when coherent flux is sufficient, the stability required during an exposure is another important ...
Chang, Huibin +3 more
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Partially Coherent Vortex Beams of Arbitrary Order
Frontiers in Optics 2016, 2016 We derive analytic solutions for an infinite set of partially coherent vortex beams (PCVBs) of any azimuthal order and for any propagation distance. The correlation singularities of the beams and their orbital angular momentum are investigated. This detailed study of PCVBs opens the possibility of using such beams for remote sensing and free-space ...
C S D, Stahl, G, Gbur
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Incoherent vector vortex-mode solitons in self-focusing nonlinear media
, 2004 We suggest a novel type of composite spatial optical soliton created by a coherent vortex beam guiding a partially incoherent light beam in a self-focusing nonlinear medium.
Carlsson +15 more
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Coherence vortices in Mie scattered nonparaxial partially coherent beams
Optics Express, 2012 We have previously demonstrated that Mie scattering of partially coherent plane waves can create coherence vortices, namely screw-type dislocations in the phase of the spectral degree of coherence. However, plane waves are an idealization and in practice, optical beams are often much closer to reality.
Madara L, Marasinghe +3 more
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PhotonicsIn this paper, the coherent properties of partially coherent Bessel–Gaussian optical beams propagating through a uniform medium (free space) or a turbulent atmosphere are examined theoretically.
Igor Lukin, Vladimir Lukin
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Photonics, 2023 For a partially coherent Laguerre–Gaussian (PCLG) vortex beam, information regarding the topological charge (TC) is concealed in the cross-spectral density (CSD) function phase. Herein, a flexible method for the simultaneous determination of the sign and
Xiaotan Lu +4 more
doaj +1 more source
Coherent x-ray wavefront reconstruction of a partially illuminated Fresnel zone plate [PDF]
, 2011 International audienceA detailed characterization of the coherent x-ray wavefront produced by a partially illuminated Fresnel zone plate is presented. We show, by numerical and experimental approaches, how the beam size and the focal depth are strongly ...
Carbone, D. +7 more
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Raman‐based label‐free microscopic analysis of the pancreas in living zebrafish larvae
FEBS Open Bio, EarlyView.Forward stimulated Raman scattering (F‐SRS) and epi coherent anti‐Stokes Raman scattering (E‐CARS) allow label‐free discrimination of distinct subcellular structures in the pancreas of living zebrafish larvae. Given the straightforward applicability, we anticipate broad implementation of Raman microscopy in other organs and across various biomedical ...
Noura Faraj +3 more
wiley +1 more source
Radially polarized twisted partially coherent vortex beams
Optics Express, 2022 We introduce a new type of partially coherent vector beam, named the radially polarized twisted partially coherent vortex (RPTPCV) beam. Such a beam carries the twist phase and the vortex phase simultaneously, and the initial state of polarization (SOP) is radially polarized.
Leixin, Liu +6 more
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