Results 211 to 220 of about 195,954 (260)
Interferometry with ScanSAR [PDF]
1995 International Geoscience and Remote Sensing Symposium, IGARSS '95. Quantitative Remote Sensing for Science and Applications, 2002 ScanSAR data have non-stationary spectral properties. An efficient, phase-preserving azimuth focusing technique is introduced. ScanSAR interferometry is then studied: a misalignment in the scanning cycles of repeated surveys causes a decorrelation that is also slope-dependent.
MONTI-GUARNIERI, ANDREA VIRGILIO +2 more
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Journal of the Optical Society of America A, 2018
When a parallel beam of light undergoes a discontinuous change in phase or in phase gradient in the central part of the beam, two wavefronts with a common border are formed. In this paper, we formulate the interference of two such wavefronts and show that conventional diffraction and interference are special cases of a generalized interference with ...
M. Taghi Tavassoly, Hamid Salvdari
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When a parallel beam of light undergoes a discontinuous change in phase or in phase gradient in the central part of the beam, two wavefronts with a common border are formed. In this paper, we formulate the interference of two such wavefronts and show that conventional diffraction and interference are special cases of a generalized interference with ...
M. Taghi Tavassoly, Hamid Salvdari
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Double Bragg Interferometry [PDF]
Physical Review Letters, 2016 We employ light-induced double Bragg diffraction of delta-kick collimated Bose-Einstein condensates to create three symmetric Mach-Zehnder interferometers. They rely on (i) first-order, (ii) two successive first-order, and (iii) second-order processes which demonstrate the scalability of the corresponding momentum transfer.
Klaus Sengstock +19 more
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Applied Optics, 1979
The generalized principle of moiré interferometry is explained theoretically. As a result it becomes clear that the application of incoherent moiré techniques to a two-beam interferometer enables measurement of wavefront deformation that is given by an object at two different times, but it cannot reduce distortion in a viewing system.
S, Yokozeki, S, Mihara
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The generalized principle of moiré interferometry is explained theoretically. As a result it becomes clear that the application of incoherent moiré techniques to a two-beam interferometer enables measurement of wavefront deformation that is given by an object at two different times, but it cannot reduce distortion in a viewing system.
S, Yokozeki, S, Mihara
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Attosecond electron interferometry [PDF]
CLEO/Europe - EQEC 2009 - European Conference on Lasers and Electro-Optics and the European Quantum Electronics Conference, 2009 The basic properties of atoms, molecules, and solids are governed by ultrafast electron dynamics. Attosecond pulses bear the promise to resolve these electronic dynamics on their natural time scale, the atomic unit of time, which is 24 attoseconds. The high frequency of the pulses, however, means that in most of the experiments performed so far the ...
Thorsten Uphues +19 more
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Nature, 1971
I HAVE had occasion recently to re-read Goethe's Theory of Colours (1810) and have found that he described the nature of the microtopographical interference pattern given by a crystal surface, presumably from the description, that of a cleavage. In chapter 33, which deals with interference colours (Goethe calls these epoptical colours), first a precise
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I HAVE had occasion recently to re-read Goethe's Theory of Colours (1810) and have found that he described the nature of the microtopographical interference pattern given by a crystal surface, presumably from the description, that of a cleavage. In chapter 33, which deals with interference colours (Goethe calls these epoptical colours), first a precise
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2011 International Conference on Parallel Architectures and Compilation Techniques, 2011
Modern microprocessors have many microarchitectural features. Quantifying the performance impact of one feature such as dynamic branch prediction can be difficult. On one hand, a timing simulator can predict the difference in performance given two different implementations of the technique, but simulators can be quite inaccurate.
Zhe Wang, Daniel A. Jimenez
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Modern microprocessors have many microarchitectural features. Quantifying the performance impact of one feature such as dynamic branch prediction can be difficult. On one hand, a timing simulator can predict the difference in performance given two different implementations of the technique, but simulators can be quite inaccurate.
Zhe Wang, Daniel A. Jimenez
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Optics Letters, 2005
We present a surprising modification of optical interferometry. A so-called spiral phase element in the beam path of a standard microscope results in an interferogram of phase samples, for which the interference fringes have the shape of spirals instead of closed contour lines as in traditional interferograms.
Severin, Fürhapter +3 more
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We present a surprising modification of optical interferometry. A so-called spiral phase element in the beam path of a standard microscope results in an interferogram of phase samples, for which the interference fringes have the shape of spirals instead of closed contour lines as in traditional interferograms.
Severin, Fürhapter +3 more
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Asteroseismology and interferometry .
2006Memorie della Societa Astronomica Italiana Supplement, 77, p.
Thévenin, F. +5 more
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SPIE Proceedings, 1990
The use of a two-frequency, Zeeman effect laser permits simple, stable, rapid, and highly accurate interferometry. There are a number of interesting applications. Three if them are discussed here.
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The use of a two-frequency, Zeeman effect laser permits simple, stable, rapid, and highly accurate interferometry. There are a number of interesting applications. Three if them are discussed here.
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