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Proceedings Paper

Post Pulse Study For Antares Driver Amplifier
Author(s): Charles E. Knapp
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Paper Abstract

The Antares Driver Amplifier utilizes Cassegrain optics. It was observed that for an input of a single 1-ns pulse, multiple pulses were produced at the output. The characteristic time between these pulses was exactly the round-trip time of the two Cassegrain optics. The study to eliminate these extra pulses had two parts, one experimental and the other a computer modeling. Many ideas were tried during the experimental phase, and only one technique was found to significantly reduce the extra pulses; that was to properly mask the primary mirror. The computer modeling made use of a ray-tracing code to look for multiple passes due to scattering or diffraction of various optical surfaces, or misalignment of the optics themselves. The results showed that there were several such paths, but the most prominent one was scattering or diffraction of the primary mirror around the inner hole, in agreement with the experimental phase. However, some of the other paths are also of interest.

Paper Details

Date Published: 7 November 1983
PDF: 5 pages
Proc. SPIE 0380, Los Alamos Conf on Optics '83, (7 November 1983); doi: 10.1117/12.934764
Show Author Affiliations
Charles E. Knapp, University of California (United States)

Published in SPIE Proceedings Vol. 0380:
Los Alamos Conf on Optics '83
Robert S. McDowell; Susanne C. Stotlar, Editor(s)

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