基于调谐TEA CO_2激光推进的研究

The study of laser propulsion base on tunable TEA CO_2 laser

针对大气呼吸模式激光推进,采用可调谐TEA CO2激光器,选取CO2激光光谱中0001~1000带和0001~0200带中增益较强的四支谱线10P(20)、10R(12)、9P(28)及9R(14)进行了实验研究。实验结果表明,在大气呼吸模式激光推进中,空气的击穿阈值随激光波长的增大而降低,激光波长对飞行器获得的冲量耦合系数没有明显的影响。

For the air-breathing mote laser propulsion, an experimental investigation has been done with a tunable TEA CO2 laser. In the experiment, 4 strong spectral lines 10P （20）, 10R （12）, 9P （28） and 9R （ 14） in the 00^01～10^00 band and 00^01～ 02^00 band have been chosen to study the relation between the wavelength and the threshold and coupling coefficients. The results show that the threshold of air bre^down deereases when laser wavelength increases, while the wavelength has no evident effect on the momentum coupling coefficient.