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Proceedings Paper

Transient bandwidth analysis of photoconductive microwave switches implemented in the OMEGA pulse shaping system
Author(s): Kenton Green; William R. Donaldson; Robert L. Keck; Andrey V. Okishev; Mark D. Skeldon; Wolf D. Seka; Roman Sobolewski
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Paper Abstract

Previous measurements have demonstrated that the greatest limitation on the pulse-shape bandwidth of the Laboratory for Laser Energetics' OMEGA laser's driver line occurs within the electrical pulse-shaping subsystem during transmission through the photoconductive switches. A comparison of the spectral content of the shaped pulses before and after the switch indicated that the switch 3dB bandwidth was approximately 3 GHz. Since this was the limiting bandwidth of the system, it was necessary to measure and improve the microwave transmission through the switches. This challenge required a novel measurement scheme, described in this paper, to allow accurate optimization of the switch parameters that affect bandwidth. The switches were characterized and their 3dB transmission bandwidth was expanded to over 5 GHz, thereby improving them beyond the system bandwidth limits.

Paper Details

Date Published: 23 July 1999
PDF: 8 pages
Proc. SPIE 3492, Third International Conference on Solid State Lasers for Application to Inertial Confinement Fusion, (23 July 1999); doi: 10.1117/12.354228
Show Author Affiliations
Kenton Green, Univ. of Rochester (United States)
William R. Donaldson, Univ. of Rochester (United States)
Robert L. Keck, Univ. of Rochester (United States)
Andrey V. Okishev, Univ. of Rochester (United States)
Mark D. Skeldon, Univ. of Rochester (United States)
Wolf D. Seka, Univ. of Rochester (United States)
Roman Sobolewski, Univ. of Rochester (United States)

Published in SPIE Proceedings Vol. 3492:
Third International Conference on Solid State Lasers for Application to Inertial Confinement Fusion
W. Howard Lowdermilk, Editor(s)

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