GAS LASER AMPLIFYING SYSTEM

摘要

PROBLEM TO BE SOLVED: To obtain a gas laser amplifying system that has high stability in pointing a laser beam.SOLUTION: A gas laser amplifying system that amplifies and emits a laser beam by using excited laser gas as medium comprises: a laser oscillator that oscillates a laser beam; and four pairs of discharging electrodes arranged in series and used to excite laser gas. In a discharging area defined between the discharging electrodes of the four pairs of discharging electrodes, laser gas flows in a direction intersecting the optical axis of an amplified laser beam. The four pairs of discharging electrodes are arranged such that the direction of the flow of laser gas in each of the four pairs of discharging electrodes are oriented in the following order: a first direction; a second direction opposite the first direction; the second direction; and the first direction.