Patent ID: 6771685
Filing Date: 2004-08-03
Classification: H01S

Abstract:
A discharge electrodes connecting structure for a laser apparatus comprising:a pair of anode and cathode provided within a laser chamber for sealing a laser gas in an opposing manner, generating a discharge so as to excite a laser gas flowing therebetween and oscillating a laser beam; a conductive anode base holding the anode; an insulative cathode base holding the cathode; a return plate electrically connecting the anode base to said laser chamber so as to supply a current to the anode and having a thickness of equal to or more than 100 &mgr;m and equal to or less than 500 &mgr;m; and a high voltage power source supplying a high frequency current between the anode and the cathode; wherein said high frequency current includes frequencies which are more than 1 MHz, and said return plate is thicker than double an entering depth of the high frequency current and restrainable from vibrating the return plate due to the laser gas flow.