Results 261 to 270 of about 5,245,882 (320)
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Modern classical physics: optics, fluids, plasmas, elasticity, relativity, and statistical physics
Contemporary physics (Print), 2018shown that neutron packets can be constructedwith aGaussian profile (like theGlauber coherent states in optics),minimizing the uncertainty relation of position andmomentum, and exhibiting Poissonian counting statistics (i.e., random spacing between ...
M. Sanjuán
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The Statistics of Optical Flow
Computer Vision and Image Understanding, 2001Summary: When processing image sequences some representation of image motion must be derived as a first stage. The most often used representation is the optical flow field, which is a set of velocity measurements of image patterns. It is well known that it is very difficult to estimate accurate optical flow at locations in an image which correspond to ...
Fermüller, Cornelia +2 more
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Photon Statistics in Adaptive Optics
Optics and Photonics News, 1999ABSTRACT Random aberrations due to atmospheric turbulence determine the angular resolution of ground-based telescopes. Adaptive optics systems compensate the wavefront degradation before detection. Although systems with a large number of subapertures in the wavefront sensor and of actuators in the deformable mirror provide the best results, they are ...
Vidal F. Canales, Manuel P. Cagigal
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Recent progress in statistical information optics: statistical information processing for optics
SPIE Proceedings, 2013In this paper, we reviewed our recent work on the statistical information processing for optics including coherence diffraction, mutual coherence tensor, and the associated propagation properties, which we recently proposed and experimentally demonstrated.
Wei Wang, Juan Zhao, Mitsuo Takeda
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IEEE Transactions on Instrumentation and Measurement, 1999
A new type of light pulses timer allowing a direct locking within the electric oscillation delivered by a clock is presented. The light pulses to be timed cross an electro-optic crystal excited by an oscillating electric field, which modifies the light polarization.
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A new type of light pulses timer allowing a direct locking within the electric oscillation delivered by a clock is presented. The light pulses to be timed cross an electro-optic crystal excited by an oscillating electric field, which modifies the light polarization.
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Statistics of backscattering in optical waveguides
Optics Letters, 2010The statistics of backscattering induced by sidewall roughness in dielectric optical waveguides is experimentally investigated. We demonstrate that waveguide backscattering is a wavelength-dependent random process, whose statistics follows the rules of single scattering systems, independently of shape, size, and refractive index contrast of the ...
MORICHETTI, FRANCESCO +2 more
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Speckle statistics in optical coherence tomography
Journal of the Optical Society of America A, 2005The two previously reported calculations of the amplitude distribution of speckles in optical coherence tomography, each based on a different mathematical formulation, yield different results. We show that a modification of an initial assumption in one of the formulations leads to equivalent results.
Boris, Karamata +3 more
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Colloidal statistical mechanics in optical vortices
SPIE Proceedings, 2007Holographoc optical tweezers can be used to create a variety of optical landscapes in which particles can be trapped and driven. We study particles driven by optical vortices in the framework of non-equilibrium statistical mechanics.
Yael Roichman, David G. Grier
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Frontiers in Optics 2004/Laser Science XXII/Diffractive Optics and Micro-Optics/Optical Fabrication and Testing, 2004
Characteristics of the radiation fields in the proximity of inhomogeneous media are being described using concepts of statistical optics. Manipulating the statistical properties of the radiation at subwavelength scales provides new possibilities for the design of miniaturized optical sources and detectors and could also lead to the development of novel
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Characteristics of the radiation fields in the proximity of inhomogeneous media are being described using concepts of statistical optics. Manipulating the statistical properties of the radiation at subwavelength scales provides new possibilities for the design of miniaturized optical sources and detectors and could also lead to the development of novel
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Fading statistics for intersatellite optical communication
Applied Optics, 1997The narrow beam widths associated with intersatellite optical communication links make such links susceptible to signal fading because of pointing jitter. Such fading can be aggravated by stationary offsets in pointing. We calculated the fade rates for the case of two spaceborne telescopes having Gaussian beam profiles, a pointing offset, and pointing ...
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