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Proceedings Paper

Video sampling: a new low-cost method of capturing fast repetitive processes
Author(s): Michael Moeller; Hans-Juergen Bruns
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Paper Abstract

A new method for measurement, documentation and visualization of fast repetitive processes is presented. The method extends the principle of sampling--as is currently used in measuring fast repetitive electrical signals--to video recording; using a fast external shutter in front of an unmodified, free running, standard CCIR or EIA video camera. The result is a slow-motion display that can be viewed continuously, recorded on standard video equipment or further processed like any other video signal. In a number of experiments in the field of nonlinear optics, exposure intervals of down to 100 nanoseconds at a full-frame repetition rate of 25 Hz were used, thus slowing down the time scale by a factor of 400,000. Additional features increase the efficiency, which is otherwise limited by the short exposure time, increase the maximum time-scaling factor and facilitate polarization-resolved measurements.

Paper Details

Date Published: 1 September 1995
PDF: 9 pages
Proc. SPIE 2549, Ultrahigh- and High-Speed Photography, Videography, and Photonics '95, (1 September 1995); doi: 10.1117/12.218296
Show Author Affiliations
Michael Moeller, Georgia Institute of Technology (Germany)
Hans-Juergen Bruns, Westfaelische Wilhelms-Univ. (Germany)


Published in SPIE Proceedings Vol. 2549:
Ultrahigh- and High-Speed Photography, Videography, and Photonics '95
George A. Kyrala; Donald R. Snyder, Editor(s)

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