| 摘要 |
1,224,438. Lasers. PATENT-TREUHANDGESELLSCBAFT FUR ELEKTRISCHE GLUHLAMPEN m.b.H. 21 March, 1969 [21 March, 1968], No. 15062/69. Heading H1C. In a He-Ne or other gas laser in which the active gas is contained in a capillary 1 and is excited by A.C. or D.C. energization of electrodes 3 housed in side pockets 4, the tube 5 coupling a pocket with the capillary has its end 6 extended into the pocket and its bore constricted at 7 so as to reduce the deposition of cathode debris on contiguous resonator mirrors or Brewster end windows 2. In a modification, Fig. 2 (not shown) the constricted entrance to the tube 5 is located in a side wall. |
