| 摘要 |
PURPOSE:To prevent the decrease of output of the disorder of transverse mode by providing a prism and a total reflection side mirror in a laser tube, in an internal mirror type ion laser tube. CONSTITUTION:The laser tube 7 consists of a plasma fine tube 1, an anode 3, a cathode 8, and a package 16. Opposed to the plasma fine tube 1, an output side mirror 5 is air-tightened via a package 4 on one side, and a wavelength selecting prism 14 and the total reflection side mirror 15 are air-tightened to the package 16 on the other side. Since the tube is an internal mirror type ion laser tube having the prism 14 and the total reflection side mirror 15 in the laser tube like this, dust removal is not necessitated, and accordingly the decrease of output and the disorder of transverse mode due to the deposition of external stains can be prevented. |
