Arrangements for increasing sputter life in gas discharge tubes

Details Arrangements for increasing sputter life in gas discharge tubes Arrangements for increasing sputter life in gas discharge tubes

2006-06-06

2006-06-06

Harvey, Minsun Oh (Department: 2828)

Coherent light generators

Particular active media

Gas

C372S055000

Reexamination Certificate

active

07058111

ABSTRACT:
A gas discharge tube, such as a ring laser gyroscope, includes a block, a cathode, and an anode. At least a portion of the block is maintained at a reference potential. The cathode may be biased at a higher potential than the reference potential, and the anode may be biased at a higher potential than the cathode. Alternatively, the cathode may be biased at a lower potential than the reference potential, and the anode may be biased at a higher potential than the reference potential. These biases enhance the flow of negative oxygen ions and impede the flow of positive alkali ions to increase sputter life of the gas discharge tube. Additionally or alternatively, a biasing electrode may be applied to the block to overlie the plasma supporting passage between the cathode and the anode. The biasing electrode has a bias to attract positive alkali ions.

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International Search Report, date of mailing Nov. 28, 2002.

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