| 摘要 |
A high power convective flow gas laser having reduced aberration is characterized by negative branch unstable resonator configuration. The present laser is configured to invert an intracavity beam about a focal point within the optical cavity, thereby avoiding a region of high temperature gas located adjacent to the excitation cathode. The present laser has an output beam whose profile corresponds to the theoretical annular shape and is further characterized by an extraction efficiency on par with those of known lasers.
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