Entladungsanordnung in einem Laser

The description refers to a laser having a laser tube containing the laser medium and enclosing a coaxially arranged external tube forming an annular cavity at the end faces of which are located firing electrodes, said cavity containing a discharge medium in which a discharge plasma is generated whose light emission optically pumps the laser medium. The invention is characterized by at least one firing electrode having in the area of the external tube an annular point or cutting edge directed at the second firing electrode and that the width of the annular cavity is much greater than the thickness of the generated discharge plasma.