Time-resolved measurements from speckle interferometry
نویسندگان
چکیده
منابع مشابه
Time-resolved measurements from speckle interferometry.
We present time-resolved measurements by speckle interferometry of the light scattered by a liquid medium. Measurements were performed by use of reflectance geometry and are compared with results obtained in the same conditions with a femtosecond laser and a streak camera. The setup was also tested in vivo on the forearm of a human volunteer to demonstrate the potential utility of such a setup ...
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We present observations of granular velocities and their relation to the granular intensity pattern from the disc center of the Sun. They were obtained in June 1997 with the Vacuum Tower Telescope at the Observatorio del Teide on Tenerife. High spatial resolution, 0. ′′4–0. ′′5 for the velocities, was achieved with speckle methods applied to two-dimensional narrow-band images in Na D2 from the ...
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In recent years the availability of high-speed digital video cameras has motivated the study of electronic speckle pattern interferometry (ESPI) in the time domain. To this end a properly sampled temporal sequence of N-fringe patterns is used to analyze the temporal experiment. Samples of temporal speckle images must fulfill the Nyquist criteria over the time axis. When the transient phenomena ...
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ژورنال
عنوان ژورنال: Optics Letters
سال: 2005
ISSN: 0146-9592,1539-4794
DOI: 10.1364/ol.30.000050