PURPOSE: To enable stable discharge even on the increase in the amount of discharge current, and to enable laser outputs of high output and high efficiency by a method wherein the discharge electrodes the titled device are formed out of the sintered alloy of two kinds or more of hetero metals of different oxidizing inclination.
CONSTITUTION: The discharge electrodes consist of a Cu anode 1, cathode 2, tungsten particles 3, an oxide film 3a made of tungsten particles 3, Cu particles 4, and an oxide film 4a made of Cu particles 4. The oxide film 3a made of tungsten particles 3 and the oxide film 4a made of the Cu particles 4 are much different in the amount of electron release through these oxide films 3a and 4a, and so most of electrons (-e) are released out of the oxide film 4a made of Cu particles 4 corresponding to the mesh of the oxide film 3a made of tungsten particles 3. Therefore, the local concentration of current density is dispersed by the oxide film 3a made of tungsten particles 3, and it is possible to keep glow discharge as shown in Fig. 2 even when the amount of discharge current is increased; accordingly, laser output of high output and high efficiency can be obtained.
NISHIOKA TOGO
YOSHIZUMI SHUZO
TERADA SETSUO
| JPS5792748A | 1982-06-09 | |||
| JPS58111250A | 1983-07-02 |