Segmented lasing tube for high temperature laser assembly

A high temperature laser assembly for withstanding operating temperatures in excess of 1500.degree. C. having a segmented cylindrical ceramic lasing tube therein which comprises:

• a) a plurality of cylindrical lasting tube segments each having the same inner diameter and the same outer diameter as an adjoining ceramic lasing tube segment, each of said ceramic lasing tube segments having inner and outer diameters, as measured from the center axis of said ceramic lasing tube segment, which do not rarer more than .+-.0.25 millimeters (0.10 inches) along the entire length of said lasing tube segment, and from the respective inner and outer diameters of adjoining ceramic lasing tube segments;
• b) threaded means on the respective ends of adjoining ceramic lasing tube segments for joining said segments together in coaxial alignment with one another to form said segmented cylindrical ceramic lasing tube, said threader means having aligned bored means to receive a pin to permit said ceramic lasing tube segments to be maintained in circumferential as well as coaxial alignment;
• c) insulation of uniform thickness surrounding the outer wall of said segmented ceramic lasing tube;
• d) a ceramic casing surrounding said insulation for retaining said insulation and forming a wall of a vacuum-tight chamber;
• and
• e) a fluid cooled metal jacket means surrounding said ceramic casing.

A high temperature laser assembly for withstanding operating temperatures in excess of 1500.degree. C. having a segmented cylindrical ceramic lasing tube therein which comprises:

• a) a plurality of cylindrical lasing tube segments each having the same inner diameter and the same outer diameter as an adjoining ceramic lasing tube segment, each of said ceramic lasing tube segments having inner and outer diameters, as measured from the center axis of said ceramic lasing tube segment, which do not vary more than .+-.0.25 millimeters (0.10 inches) along the entire length of said lasing tube segment;
• anti from the respective inner and outer diameters of adjoining ceramic lasing tube segments;
• b) one or more of said ceramic lasing tube segments provided with an external cutaway end portion;
• c) one or more of said ceramic lasing tube segments adjoining said one or more ceramic lasing tube segments having external cutaway end portions other of said ceramic lasing tube segments being provided with internal cutaly end portions for receiving said external cutaway portions, to thereby provide for joining said ceramic lasing tube segments together in coaxial alignment with one another to form said segmented lasing ceramic tube, said internal and external cutaway portions having bore means to receive a pin to permit said ceramic lasing tube segments to be maintained in circumferential as well as coaxial alignment to one another;
• d) insulation of uniform thickness surrounding the outer wall of said segmented ceramic lasing tube;
• e) a ceramic casing surrounding said insulation for retaining said insulation and forming a wall of a vacuum-tight chamber;
• and
• f) a fluid cooled metal jacket means surrounding said ceramic casing.