Patent ID: 6856639
Filing Date: 2005-02-15
Classification: H01S

Abstract:
1. A gas laser comprising: a pair of elongated electrodes, arranged to define a discharge region between two opposing surfaces of said elongated electrodes, the discharge region having a longitudinal axis, a wide axis and a narrow axis, a lasing gas disposed in said discharge region, an excitation assembly configured to energize the electrodes to excite the lasing gas, a first mirror having a first mirror curvature, the first mirror being spaced from a first end of the pair of elongated electrodes with respect to the longitudinal axis by a first distance, and a second mirror arranged spaced from a second end of the pair of elongated electrodes, the first and the second mirrors defining a resonator, wherein said two opposing surfaces have an electrode curvature, respectively, configured to define a wave front curvature, for a wave propagating towards the first mirror, of a fundamental transverse radiation mode with respect to the narrow axis, and said wave front curvature, for the wave propagating towards the first mirror, substantially coinciding with the first mirror curvature at the first distance.