Gas laser tube

US4564948A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventor

• Hans Golser · Munich, DE

Key dates

• Filing date: Mar 26, 1984
• Grant date: Jan 14, 1986
• Expiry date: Mar 26, 2004

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01S3/038
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A gas laser tube with a vacuum envelope, includes: PA1 a tubular section formed of an electrically insulating material with a coefficient of thermal expansion H.sub.1 ; PA1 an end section formed of an electrically insulating material with a coefficient of thermal expansion H.sub.2, such that ##EQU1## wherein i=1, 2; and a transition element connecting the tubular section to the end section; the transition element including a first metallic section adjacent the tubular section and a second metallic section, the first and second metallic sections having different respective coefficients of thermal expansion H.sub.3 and H.sub.4 ; PA1 the first metallic section being thermally matched to the tubular section such that ##EQU2## wherein m=1, 3; the second metallic section being thermally matched to the end section such that ##STR1## wherein n=2, 4; the first and second metallic sections having end surfaces with mutually complementary steps formed therein being disposed inside each other; and PA1 the first and second metallic sections having inner wall surfaces being joined together.