可调谐TEA CO_2激光器多频输出

Multi-frequency transversely excited atmospheric pressure CO_2 laser

为了满足多频红外激光分离同位素的需要,采用平行的双光栅腔结构,在最佳混合气体体积分数、总压强50.7 kPa、电压27 kV条件下,成功得到了TEA CO2激光器常规带多组双频和三频激光输出。输出的双频波(或三频波)具有良好的空间重叠性和时间同步性,输出波长可调谐且调谐范围较大,激光从一光栅旁边近似地沿平行于腔轴的方向输出,可以满足对一些物质双频(或多频)激发或分离同位素的需要。

Double and triple frequency laser outputs have been obtained with the adoption of a parallel grating-grating cavity. The results are derived at a total gas pressure of 50.7 kPa, with the gas combination in volume fraction of 13% CO2, 13% N2, 74% He under 27 kV voltage. The double or triple frequency output laser possesses fine space overlap and time synchronization, and is tunable within a wide frequency ange. The laser exports beside one of the gratings approximately parallel to the cavity axis. It can meet the requirement of some materials＇ double （or multiple） frequency excitation and isotope separation.