GAS LASER

摘要

A capacitor (C2) that gives discharge energy to discharge electrodes (11, 12) is disposed outside a laser tube (10) which is oriented at right angles with both the direction of discharge and a resonance direction of a laser beam. One end of the capacitor is connected to the anode side of the discharge electrode, and the other end thereof to a spare electrode (16) that is arranged on the cathode side of the discharge electrode maintaining a predetermined discharge gap. This makes it possible to reduce the posterior current after discharge has taken place and to prolong the life of the circuit components. In addition to the above-mentioned structure, a gas supply hole is formed over the discharge portion of one of the main discharge electrodes, and a laser gas is injected from the gas supply hole toward the other main discharge electrode. This enables discharge to take place very efficiently and the recycling rate of the laser gas to be minimized, and makes it possible to accomplish oscillation of a high repetitive number that has been so far impossible with the conventional devices.