TEA CO_2激光推进耦合系数的实验研究  

Experimental Study on Coupling Coefficients for TEA CO_2 Laser Propulsion

作　　者：郑义军[1] 龚平[2] 谭荣清[1] 唐志平[2] 柯常军[1] 蔡建[2] 万重怡[1] 胡晓军[2] 于延宁[1] 刘世明[1] 吴谨[1] 郑光[1] 周锦文[1] 吕岩[1] 

机构地区：[1]中国科学院电子学研究所,北京100080 [2]中国科学技术大学力学和机械工程系,安徽合肥230027

出　　处：《光电子．激光》2005年第5期624-628,共5页Journal of Optoelectronics·Laser

基　　金：中国科学院电子学研究所创新项目基金资助(5067)

摘　　要：报道了采用高重复频率TEA CO2 激光器在不同气压下对冲击摆进行大气模式激光推进耦合系数测试的实验。结果发现,在气压为34.6×103 Pa左右可获得最大的冲量耦合系数。这与在不同气压下采用冲击摆进行固体靶激光推进实验中,在34.6×103 Pa左右存在最大的冲量耦合系数相似。从激光等离子体冲击波的角度对这一现象进行了初步的分析和解释。The experiment of coupling coefficients for TEA CO2 laser propulsion (air mode) was reported at various pressures. It is found that the coupling coefficient reaches the maximum value at the pressure of 34.6 kPa, which was similar with the case of the experiment, in which TEA CO2 laser pulses were focused on the surface of solid targets at different air pressures. In that experiment, the maximum coupling coefficient was also measured at the air pressure of 34.6 kPa. According to the theory of shockwave and plasma at high temperature, the paper gave a elementary analysis and explanation to this phenomenon.

关 键 词：激光推进 TEA 实验研究 冲量耦合系数 等离子体冲击波 CO2激光器 高重复频率 大气模式 冲击摆 固体靶 压下 

分 类 号：TN248.22[电子电信—物理电子学] V43[航空宇航科学与技术—航空宇航推进理论与工程]