Cold cathode fabrication for ring laser gyroscope

Details Cold cathode fabrication for ring laser gyroscope Cold cathode fabrication for ring laser gyroscope

1984-12-10

1986-06-17

Ramsey, Kenneth J.

Electric lamp or space discharge component or device manufacturi

Process

With assembly or disassembly

313346R, 372 87, 372 99, H01S 3097, H01J 902

Patent

active

045953775

ABSTRACT:
Method of fabricating an cold cathode for a laser such as ring laser gyro characterized by the use of vitreous carbon as the material of the cathode. For this purpose a predetermined amount of resin is pressed formed into the shape of a hollowed cathode body which is then heated in an oxygen free environment form a vitreous shaped cathode by thermal degradation of the resinous body. The vitreous carbon material reduces the difference between the coefficients of thermal expansion of the housing and electrode which can cause the indium seal to fail, e.g., in the case of prior aluminum cathode. The electrical connection may be made via either a silver epoxy or indium solder.

REFERENCES:
patent: 3486058 (1969-12-01), Hernqvist
patent: 3535758 (1970-10-01), Hoet
patent: 3876957 (1975-04-01), Thatcher
patent: 3955152 (1976-05-01), Lewis
patent: 4392229 (1983-07-01), Hostetler

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