Patent ID: 6895030
Filing Date: 2005-05-17
Classification: H01S

Abstract:
1. A laser oscillator comprising: a discharge tube operable to pass laser gas inside thereof and to excite the laser gas; a first electrode disposed at a first end of said discharge tube; a second electrode disposed at a second end of said discharge tube; and a laser gas passage operable to supply the laser gas to said discharge tube, said laser gas passage being connected to said discharge tube, wherein a width B of said discharge tube in a direction normal to a gas flow direction in said laser gas passage near a connection portion of said discharge tube and said laser gas passage is larger than an inner diameter A of said discharge tube, and a following relation is satisfied wherein A>0 and B>0, wherein said discharge tube includes a laser gas inlet, and wherein one of said first electrode and said second electrode is disposed near said laser gas inlet.