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US 4,905,248 AGranted
Metal vapor laser apparatus
AssigneeKabushiki Kaisha Toshiba
InventorNaoto Nishida
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Abstract
In a metal vapor laser apparatus of this invention, a cathode electrode side end portion is made longer along a tube axis than an anode electrode side end portion. A distance between a cathode side end of the discharge tube and a cathode electrode is longer along a tube axis direction than a distance between an anode side end of the discharge tube and an anode electrode.
Claims5
A metal vapor laser apparatus comprising:
- a discharge tube for generating a laser beam, said tube containing a buffer gas under a predetermined pressure and having at least one set of a cathode electrode and an anode electrode, a distance between said cathode electrode and a cathode side end of said discharge tube along a tube axis direction being at least 1.3 times a distance between said anode electrode and an anode side end of said discharge tube;
- power source means for applying a voltage to said electrodes;
- a metal vapor source arranged in said discharge tube;
- and
- a pair of resonator mirrors for reflecting the laser beam generated in said discharge tube to cause optical resonation.
2 more elements
Dependencies are inferred from the claim text.