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讨论了化学激光器产生激光的粒子数反转条件,给出了化学激光器反转粒子数浓度差随J值的变化情况。指出对于某一振动态存在截止波长量子数J0和最大光谱跃迁量子数Jm。通过化学激光器增益系数与光腔静温T和下上能级粒子数质量分数比Nx关系仿真计算分析,提出结合激光器光谱测量结果计算J0、Jm与光腔静温T和下上能级粒子数质量分数比Nx变化关系交点以实现化学激光器运转状态诊断的方法。结合实际HF化学激光器的光谱测试结果,给出了化学激光器光腔静温和下上能级粒子质量分数比。
The conditions of the number of particles in the laser produced by the chemical laser are discussed. The variation of the number density of the inverted laser with the value of J is given. It is pointed out that for a certain vibrational state, the quantum number of cutoff wavelength J0 and the maximum spectral transition quantum number Jm exist. Through the calculation and analysis of the relation between the gain coefficient of chemical laser and the mass fraction ratio Nx of the cavity at the upper and the upper energy levels, the calculation results of J0, Jm and the static temperature T of the optical cavity and the number of lower level energy particles Mass fraction ratio Nx changes the relationship between the intersection point in order to achieve chemical laser operating condition diagnosis method. According to the spectral test result of the actual HF chemical laser, the chemical laser cavity temperature and the upper and lower level particle mass fraction ratio are given.