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US 4,378,600 AGranted
Gas laser
AssigneeCoherent, Inc.
InventorJames L. Hobart
Life of this patent
Estimating the term…
Abstract
A gaseous laser includes a gas discharge tube made of a comparatively thin-walled ceramic tube. Heat from the discharge is transmitted to the exterior tube by conduction through thin-walled, cup-shaped members which are bonded to the interior wall of the ceramic tube. The discharge cross-section is determined by apertures in sputter-resistant discs which are coaxially affixed to or formed on the cup members. Also coaxially affixed to the cup-members are cylindrical shields which control gas pumping within the tube. Gas return holes are provided in the cup-members.
Claims19
A laser comprising:
- a gas-confining cylindrical tube made of a relatively thin-walled, electrically-insulating material;
- a plurality of spaced-apart discs within and generally perpendicular to the axis of said tube, each having a central aperture co-axially aligned with the axis of said tube to define a central discharge path;
- a plurality of cup-shaped members of a material having high thermal conductivity, each having a generally flat face and a generally cylindrical rim, and each having an opening in the middle of the face;
- means for providing a heat conduction path from the central aperture of each of said discs to and through the tube wall comprising means for attaching a disc at the pheriphery of the opening of each of the cup members and means for attaching the distal edge of each of the cup rims along the inside wall of said tube;
- means for exciting a gas within said tube;
- and
- an optical cavity aligned with said tube.
4 more elements
A laser comprising:
- a gas-confining cylindrical tube made of a relatively thin-walled electrically-insulating material;
- a plurality of thin-walled members each having a generally circular outer circumference, and of a material having high thermal conductivity, each having a central aperture coaxially aligned with the axis of said tube to define a central discharge path;
- means for providing a heat conduction path from the central aperture of each thin-walled member to and through the tube wall, comprising means for attaching the outer circumference of each thin-walled member along the inside wall of said tube;
- means for providing a region surrounding each of said apertures with a sputter-resistant material;
- means for exciting a gas within said tube;
- and
- an optical cavity aligned with said tube.
4 more elements
Dependencies are inferred from the claim text.