| 摘要 |
PURPOSE:To obtain a laser beam of a single mode by a method wherein a capacitive load medium under a metal electrode is made convex to make a discharge current and the distribution of an oscillation gain uniform. CONSTITUTION:A capacitive load medium 9 constitutes a discharge tube. The medium 9 is formed concave in section called as A type which makes the intensity of an electric field between electrodes uniform in distribution, the surfaces 9a and 9b of the medium 9 are generally hyperbolic curves, and the upper and the lower part of the medium are symmetrical and the same in size. Electrodes composed of metal electrodes 2a and 2b and the medium 9 are made to face each other at an angle of + or -1 degree or less. As shown with lines of electric force, the intensity of an electric field between the electrodes is uniform in distribution, so that the discharge is improved in stability and uniformity. In result, a laser oscillation gain inside a laser active region 7 is uniform. By these processes, a laser beam of a single mode can be obtained. |
