Patent 7804879 was granted and assigned to Coherent (operating system) on September, 2010 by the United States Patent and Trademark Office.
A gas discharge laser includes elongated discharge electrodes having an active surface width that varies along the length of the resonator. In one example each of the electrodes is formed by a row of pins having a circular active surface. The pins are diametrically aligned with the active surfaces generally coplanar.