采用氟化氢泛频化学激光器作光源,在室外实际大气中测量了氟化氢泛频激光20P4、20P5谱线的大气透过率,分析计算了其大气消光系数和大气吸收系数.实验表明氟化氢泛频激光处于大气传输窗口边缘,其谱线的大气传输性能差异很大,证实了20P4是氟化氢泛频选频的首选谱线.

The relationship between the pump beam and the probe beam is very important in two color Z-scan tecnique that is used to study nonlinearities of optical materials.The influences of two light beam's confocal parameter and the distance between two beam waists to measurement sensitivity have been studied by Guassian decomposition method.The calculated results show that with the increase of the ratio of the pump beam's confocal parameter to the probe beam's,the sensitivity of measurement will increase reapidly,and with the increase of the distance between two beam waists,the sensitivity will decrease obviously.

Based on ArS2 analysis potential function, which was calculated using ab initio MP2/6-31+G method and multi-body expansion theory, the dynamic proces s has been studied. The results indicated that the restraint of Ar and S2 due to physical adsorption, and the reaction of Ar and S2 is pri marily non-elasticity collision at a serial set of energies. Through analysis of inelastic collision products, it is shown that Ar atom can excite S2 (Ｘ3Σ－g) to S2(B3Σ－u) gradually.

Experimental study of hydrogen fluoride chemical laser operating on overtone transition was reported. The influence of operation parameters on laser output characteristics were also investigated experimentally. The result shows that the HF laser output characteristics are the best, when the excess gas parameters are approximate to 1.0-1.6 and dilute ratio is approximate to 2.5-2.9. The number of higher J values rotational level is relaxed by helium.