| 摘要 |
PURPOSE:To make it possible to oscillate high power output laser as a whole, by providing a gas cooling radiator between two or more sets of discharge electrode pairs, always cooling laser gas, which is sent to a space between discharge electrodes located on the downstream side, and preventing the decrease in amplification action of light. CONSTITUTION:A laser-gas cooling radiator 11 is provided between two sets of discharge-electrode pairs 3-1 and 3-2 and 3'-1 and 3'-2 so as to cross the flowing direction of gas. Laser gas is made to flow in the direction of an arrow 6 in an airtight container 1. At first, the gas is cooled by a heat exchanger 4. The laser gas, whose temperature is made low, flows into a discharge space 7-1, which is formed by the electrode pair 3-1 and 3-2 on the upstream side of the gas. The gas is excited, and laser light is oscillated and generated. The gas, which has passed the discharge sapce 7-1, and whose temperature becomes high, is sent into a discharge space 7-2, which is formed by the electrode pair 3'-1 and 3'-2 on the downstream side. The laser gas is cooled through the radiator 11, and the temperature is lowered. Therefore, the amplification action of the laser light is not so decreased, and effective oscillation is performed. |
