Ion-laser including a silicon carbide discharge tube having a sm

Details Ion-laser including a silicon carbide discharge tube having a sm Ion-laser including a silicon carbide discharge tube having a sm

1992-11-23

1994-06-28

Healy, Brian

Coherent light generators

Particular active media

Gas

372 55, 372 62, H01S 303

Patent

active

053253892

ABSTRACT:
The present invention provides a novel ion-laser tube possessive of a high output characteristic. The ion-laser tube includes an improved slender discharge tube made of silicon carbide possessive of a high resistivity to sputtering caused by high energy ions and electrons involved in a large discharge current. The improvement in the novel ion-laser tube over the prior art manifests in the discharge tube having an inner wall surface possessive of a small roughness, typically approximately 4 micrometers or smaller. Such small roughness in the inner wall surface of the discharge tube is possessive of preventing silicon carbide molecules existing in the inner wall surface thereof to be sputtered by high energy ions and electrons involved in the large discharge current. As a result of those, the novel ion-laser tube is free from a substantial reduction of laser output. The ion-laser tube also includes a tubular enclosure member for enclosing the discharge tube, which is made of aluminum nitride possessive of a high heat conductivity.

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