Results 251 to 260 of about 1,044,226 (289)
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Inverse Scattering for Optical Coherence Tomography
Frontiers in Optics, 2005Inverse scattering theory for optical coherence tomography (OCT) is developed. The results are used to produce algorithms to resolve three-dimensional object structure, taking into account the finite beam width, diffraction, and defocusing effects. The resolution normally achieved only in the focal plane of the OCT system is shown to be available for ...
Tyler S, Ralston +3 more
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Modeling the Coherence of Scattered Signals of Opportunity
IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium, 2019The reflection of radar echoes collected under both monostatic and bistatic configurations generally undergoes losses of coherence. These can be affected by many factors, depending on both the system features and the illuminated surface, and it should be properly considered for an accurate characterization of the scattering phenomenon.
Comite D. +3 more
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Scattering and coherence in EUVL
SPIE Proceedings, 1998We illustrate the importance of considering scattering from the illuminator in extreme UV lithography systems. Our results indicate that a significant amount of amplitude modulation noise is present in the aerial image if scatter is present in a Koehler illuminator.
Tomas D. Milster, Neil A. Beaudry
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Journal of Quantitative Spectroscopy and Radiative Transfer, 1973
Abstract The paper is devoted to the consideration of the problems of non-coherent scattering in a spectral line for an arbitrary redistribution law. The representation of the redistribution function r(x′,x) in the form r(χ′,χ) = ∑ k = 1 ∞ A k α k (χ′)α k (χ) is used to study the various mechanisms of line broadening.
N.B. Yengibarian, A.G. Nicoghossian
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Abstract The paper is devoted to the consideration of the problems of non-coherent scattering in a spectral line for an arbitrary redistribution law. The representation of the redistribution function r(x′,x) in the form r(χ′,χ) = ∑ k = 1 ∞ A k α k (χ′)α k (χ) is used to study the various mechanisms of line broadening.
N.B. Yengibarian, A.G. Nicoghossian
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Optical coherence microscopy in scattering media
Optics Letters, 1994We describe a novel technique, based on optical coherence tomography, for enhanced optical sectioning in confocal microscopy. Confocal imaging deep into highly scattering media is demonstrated and compared with the predictions of a single-backscatter theory.
J A, Izatt +4 more
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Anomalous Coherence Changes in Radiation and Scattering
Frontiers in Optics / Laser Science, 2020We demonstrate that two strongly correlated sources may generate a field with practically zero correlation between certain pairs of points. We argue that this is a general phenomenon in radiation and scattering.
Wadood, S. A. +4 more
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Temperature measurements by coherent Rayleigh scattering
Optics Letters, 2002We demonstrate, for the first time to our knowledge, the utility of coherent Rayleigh scattering (CRS) for temperature measurements in low-density gases and weakly ionized plasmas by measuring the translational temperature of neutral argon in a glow discharge.
Xingguo, Pan +5 more
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Scattering of electrons by intense coherent light
Physical Review Letters, 1987We report the first direct observation of electron inelastic scattering from the pondermotive potential of an intense laser pulse in vacuum. Electrons gained up to 0.2 eV when scattered from the temporal leading edge of a 1064-nm (1.165 eV), 140-psec laser pulse, and lost comparable amounts of energy when scattered from the trailing edge. When directed
, Bucksbaum, , Bashkansky, , McIlrath
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Nuclear and Particle Physics Proceedings, 2015
Abstract The experimental program to search for the coherent elastic neutrino-nucleus scattering at the Spallation Neutron Source is presented.
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Abstract The experimental program to search for the coherent elastic neutrino-nucleus scattering at the Spallation Neutron Source is presented.
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Spatial coherence in strongly scattering media
Journal of the Optical Society of America A, 2005We study the spatial coherence of an optical beam in a strongly scattering medium confined in a slab geometry. Using the radiative transfer equation, we study numerically the behavior of the transverse spatial coherence length in the different transport regimes. Transitions from the ballistic to the diffusive regimes are clearly identified.
Pierrat, Romain +3 more
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