| 摘要 |
<p>A gas laser includes a laser cavity (21) and electrodes (5, 6) defining an electric discharge path in the cavity. The electrodes include an anode (5) having a porous surface and gas is injected into the cavity (21) through the porous surface of the anode. Further gas inlets (22) are provided adjacent the anodes (5). The laser head can be mechanically separated from gas flow generation means for generating a gas flow through the laser cavity.</p> |
