Electrical discharge apparatus and a gas laser pumped by an...

Details Electrical discharge apparatus and a gas laser pumped by an... Electrical discharge apparatus and a gas laser pumped by an...

H - Electricity

01

S

313/125, 345/38

H01S 3/03 (2006.01) H01S 3/097 (2006.01)

Patent

CA 1147049

ABSTRACT. In electrical discharge apparatus, such as a gas laser, in which a glow discharge is to be produced in a gas between two electrodes, at least one pre-ionising member is placed near the discharge space and extending between the electrodes so that current flows in the member which is made of intermediate resistivity material such as crystalline semiconductor material. As a result, the discharge space is pre-ionised which assists initia- tion of the main discharge. The pre-ionisation may be due to the formation of numerous small arcs between the electrodes and the member and the resulting production of ultra-violet light.

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