| 摘要 |
PCT No. PCT/JP96/01161 Sec. 371 Date Dec. 23, 1996 Sec. 102(e) Date Dec. 23, 1996 PCT Filed Apr. 26, 1996 PCT Pub. No. WO96/34437 PCT Pub. Date Oct. 31, 1996The present invention is concerned with a gas laser oscillator apparatus based on gas discharge excitation having a power supply unit, rectifying means connected to the power supply unit, a smoothing capacitor connected in parallel with the rectifying means, a choke coil connected in series with the rectifying means and a laser tube connected in parallel with the smoothing capacitor and in series with the choke coil, wherein a smoothing capacitor capacitance C and an inductance L of the choke coil are determined byf>+E,fra 1/2+EE pi 2ROOT +E,rad LC+EE .Even when with this construction, the capacitance C of the smoothing capacitor is set tof>+E,fra 1/2+EE pi 2ROOT +E,rad LC+EE ,a ripple of a current flowing to the laser tube can be smaller than that in the conventional apparatus and a stable laser output can be obtained.
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