| 摘要 |
PURPOSE:To improve the discharge resistance, heat resistance and adhesion to a discharge electrode of a discharge electrode covering dielectric by using a glass material having the main components of SiO2, N2O and K2O with an additive of TiO2 as the dielectric. CONSTITUTION:In a discharge excitation type gas laser apparatus, a glass material having the main components of SiO2, NO2 and K2O with an additive of 10%-30% TiO2 is used as a dielectric 10 to cover discharge electrodes 2 and 3. Since the dielectric 10 thus constituted has a large permittivity, injection electric power to a discharge can be increased by applying a higher voltage. Further, since TiO2 reduces a coefficient of thermal expansion, an adhesion to the discharge electrodes 2 and 3 can be increased. |
