Segmented hollow cathode laser with split anode

Details Segmented hollow cathode laser with split anode Segmented hollow cathode laser with split anode

1981-06-25

1983-04-12

Sikes, William L.

Coherent light generators

Particular active media

Gas

372 87, H01S 308

Patent

active

043800785

ABSTRACT:
A gas laser for generating multiline emissions when appropriately energized. The laser includes an anode-cathode assembly (18, 16, 18) and, in a first embodiment, adjustable Brewster end sections, or in a second embodiment, integral mirror end sections (70, 72). The anode-cathode assembly comprises two center located short cylindrical anodes (16a, 16b) and two segmented cylindrical hollow cathodes (18) located symmetrically adjacent the split anode (16a, 16b). The anodes and cathodes are electrically insulated by a cylindrical metal ceramic seal (20). The outer surface of each cathode (18) is covered with quartz insulating sleeves (24) to prevent electrical discharge from the outer cathode surface and to encourage effective inner cathode discharge. The cathode (18) is thermally connected to the external environment through a structure (26) coupled to the cathode and the laser tube envelope (11) to improve heat dissipation, thereby allowing higher input power. A metal vapor reservoir (30) is attached to the anode section for metal vapor laser operation. The laser of the present invention can be made up of one or more anode-cathode assemblies depending on the laser medium and the selected output requirement.

REFERENCES:
patent: 3868593 (1975-02-01), Fukuda et al.
patent: 4031428 (1977-06-01), Tokudome et al.
patent: 4105954 (1978-08-01), Wang et al.
patent: 4255720 (1981-03-01), Wang et al.
patent: 4287484 (1981-09-01), Wang et al.

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