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Title: Magnetron cathodes in plasma electrode Pockels cells

Abstract

Magnetron cathodes, which produce high current discharges, form greatly improved plasma electrodes on each side of an electro-optic crystal. The plasma electrode has a low pressure gas region on both sides of the crystal. When the gas is ionized, e.g., by a glow discharge in the low pressure gas, the plasma formed is a good conductor. The gas electrode acts as a highly uniform conducting electrode. Since the plasma is transparent to a high energy laser beam passing through the crystal, the plasma is transparent. A crystal exposed from two sides to such a plasma can be charged up uniformly to any desired voltage. A typical configuration utilizes helium at 50 millitorr operating pressure and 2 kA discharge current. The magnetron cathode produces a more uniform plasma and allows a reduced operating pressure which leads to lower plasma resistivity and a more uniform charge on the crystal. 5 figs.

Inventors:
Issue Date:
Research Org.:
University of California
OSTI Identifier:
46316
Patent Number(s):
5,410,425
Application Number:
PAN: 8-058,844
Assignee:
Dept. of Energy, Washington, DC (United States)
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 25 Apr 1995
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; POCKELS CELL; CATHODES; IONIZATION; PLASMA PRODUCTION; ELECTRIC CONDUCTIVITY; LASER RADIATION; LIGHT TRANSMISSION

Citation Formats

Rhodes, M A. Magnetron cathodes in plasma electrode Pockels cells. United States: N. p., 1995. Web.
Rhodes, M A. Magnetron cathodes in plasma electrode Pockels cells. United States.
Rhodes, M A. Tue . "Magnetron cathodes in plasma electrode Pockels cells". United States.
@article{osti_46316,
title = {Magnetron cathodes in plasma electrode Pockels cells},
author = {Rhodes, M A},
abstractNote = {Magnetron cathodes, which produce high current discharges, form greatly improved plasma electrodes on each side of an electro-optic crystal. The plasma electrode has a low pressure gas region on both sides of the crystal. When the gas is ionized, e.g., by a glow discharge in the low pressure gas, the plasma formed is a good conductor. The gas electrode acts as a highly uniform conducting electrode. Since the plasma is transparent to a high energy laser beam passing through the crystal, the plasma is transparent. A crystal exposed from two sides to such a plasma can be charged up uniformly to any desired voltage. A typical configuration utilizes helium at 50 millitorr operating pressure and 2 kA discharge current. The magnetron cathode produces a more uniform plasma and allows a reduced operating pressure which leads to lower plasma resistivity and a more uniform charge on the crystal. 5 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1995},
month = {4}
}