| 摘要 |
<p>A gas laser apparatus includes an insulating material layer (3) covering outside surfaces of a pair of metal electrodes (2, 2 min ) disposed on the outer peripheral surface of a dielectric discharge tube (1). The insulating material layer (3) thus provided electrically separates the metal electrodes (2, 2 min ) and prevents a dielectric breakdown which would otherwise occur through an air gap between adjacent portions of the metal electrodes (2, 2 min ) when a high-frequency voltage is applied across the metal electrodes (2, 2).</p> |
