Mechanism for initiating discharge in a high power gas transport

Details Mechanism for initiating discharge in a high power gas transport Mechanism for initiating discharge in a high power gas transport

1977-05-04

1979-05-22

Sikes, William L.

Oscillators

Molecular or particle resonant type

331 945G, H01S 3097

Patent

active

041562089

ABSTRACT:
A starter element for a high power gas transport laser having cathode and anode electrodes connected across a constant current DC power supply comprises a wire-like conductor connected in parallel with the cathode to the negative terminal of the power supply and extending between the cathode and anode parallel to the gas flow transversely of and spaced closely to the middle of the cathode. The free end of the starter element extends approximately 1 cm. beyond the downstream edge of the cathode and, when the output potential of the DC power supply is applied, causes a breakdown of the gas due to the high field strength at the starter end, producing an electrical discharge between that end and the central portion of the cathode. This induces the main electric discharge between the cathode and anode. In a laser having two or more sets of cathode-anode electrodes, a starter element for each cathode is connected to the power supply in parallel with the other starter elements through a series-connected resistor and a diode which electrically isolate the starter elements from each other.

REFERENCES:
patent: 2593486 (1952-04-01), Reeves
patent: 3772610 (1973-11-01), Foster et al.
patent: 3781712 (1973-12-01), Judd
patent: 3886479 (1975-05-01), Pearson
patent: 4077018 (1978-02-01), Fahlen et al.

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