Pre-ionizing trigger system for a gas laser

Details Pre-ionizing trigger system for a gas laser Pre-ionizing trigger system for a gas laser

1982-02-17

1984-05-22

Davie, James W.

Coherent light generators

Particular component circuitry

Optical pumping

372 86, 372 87, H01S 3097

Patent

active

044505663

ABSTRACT:
A pair of excitation electrodes in a laser cavity, filled with a gas mixture at substantially atmospheric pressure, are connected across a pumping capacitor by way of part of the winding of an autotransformer in series with a pre-ionizing device within the cavity acting as a trigger switch. The pre-ionizing device comprises a dielectric tube carrying a plurality of axially spaced-apart metal rings constituting a condenser chain, the rings being provided with pointed extensions confronting one another to serve as corona electrodes. Contral pulses applied to a conductor inside the tube cause a spark discharge through the cascaded corona gaps of the trigger switch with resulting energization of the autotransformer and discharge of the pumping capacitor across the excitation electrodes. The metal rings may be interconnected by high-ohmic resistors establishing a uniform field distribution therebetween.

REFERENCES:
patent: 4262267 (1981-04-01), Schimitschet et al.
patent: 4342114 (1982-07-01), Luck
patent: 4380079 (1983-04-01), Cohn et al.

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