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Proceedings Paper

Slit-mounted LED fiducial system for rotating mirror streak cameras
Author(s): Larry L. Shaw; Steven A. Muelder; Anthony T. Rivera
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Paper Abstract

We have developed a fiducial system for rotating mirror streak cameras that utilizes light emitting diodes mounted at the slit position of the camera. The diodes are driven to the required high brightness by a unique pulse power circuit designed to provide high voltage, high current pulses 18 nanoseconds in length at a frequency of up to 2.5 megahertz. The availability of super bright light emitting diodes with a wavelength of 630 to 640 nanometers allows us to record fiducial pulses, at streaking speeds in excess of 20 mm per microsecond, on all the black and white films commonly used in high speed photography. The time marks on the film record are references to the real time of the experiment from a clock-driver that controls the start and frequency of the fiducial pulse train and by three adjustable and discreet blanked fiducials. This paper discusses the development of this system and describes the full setup as used at LLNL.

Paper Details

Date Published: 1 January 1992
PDF: 7 pages
Proc. SPIE 1539, Ultrahigh- and High-Speed Photography, Videography, and Photonics '91, (1 January 1992); doi: 10.1117/12.50563
Show Author Affiliations
Larry L. Shaw, Lawrence Livermore National Lab. (United States)
Steven A. Muelder, Lawrence Livermore National Lab. (United States)
Anthony T. Rivera, Lawrence Livermore National Lab. (United States)


Published in SPIE Proceedings Vol. 1539:
Ultrahigh- and High-Speed Photography, Videography, and Photonics '91
Paul A. Jaanimagi, Editor(s)

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