准分子激光线宽压缩方法的研究

介绍了准分子激光线宽压缩的各种方法及其各自特点,并用单个标准具对308nmXeCI准分子激光进行了线宽压缩实验。     

Large Signal Analysis of the Michelson Interferometer with Gires-Tournois Interferometers in its Arms

A mathematical model for the transfer function of the Michelson interferometer with Gires-Tournois interferometers in its arms is presented. The model, basically a sine-series function, can easily yield closed-form expressions for the amplitudes of the harmonic and intermodulation components of the output when the input is formed of large-amplitude multisinusoidal voltage. The special case of two-tone equal-amplitude input voltage is considered in detail. The results show that the third-order intermodulation component is always higher than the third-harmonic component. The results also show that the linearity of the Michelson interferometer with Gires-Tournois interferometers in its arms improves with the increase of the front mirror reflectivity. Moreover, the results show that the third-order intermodulation exhibits a minimum for relatively large values of the front mirror reflectivity. Furthermore, compared with the traditional Mach-Zehnder interferometer, the results show that a reduction of 15 dB in the third-order intermodulation can be achieved even for relatively small values of the front mirror reflectivity.     

塞曼效应实验中F．P标准具的快速调试

F-P标准具是塞曼效应实验仪器的核心元件,正确保养和调试非常重要。分析了F-P标准具的结构和成像原理,介绍了F-P标准具的快速调度方法。从而提高了仪器的使用寿命和师生动手操作等能力。     

三镜级联结构Gires-Tournois谐振腔的色散特性分析

系统分析了三镜级联结构G-T谐振腔的色散特性,表明三镜级联结构G-T谐振腔具有不同于两镜级联结构G-T谐振腔的特有色散特性.利用该特性以三镜级联结构G-T谐振腔作为色散补偿元件可有效改善MGTI型interleaver的色散性能,并给出了以三镜级联结构G-T谐振腔为补偿元件的具体补偿实例.模拟结果表明：对50 GHz的MGTI型光交错复用器,可实现中心波长附近±0.08 nm、±0.09 nm和±0.1 nm范围内的色散绝对值分别小于1 ps/nm、2.4 ps/nm和6.6 ps/nm的良好的补偿结果.与文献报道的两镜级联结构G-T腔补偿结果相比,色散绝对值小于1 ps/nm的波长范围扩大了60%;在中心波长附近±0.09 nm范围内的色散绝对值降低了92%.     

双Fabry-Perot标准具在直接测风激光雷达系统中的应用与分析

 简叙了双Fabry-Perot标准具在自行研制的测风激光雷达中检测多普勒频移的原理,给出了测风激光雷达系统的参数,对入射光束的入射角和发散角对标准具频谱曲线的影响进行了分析和稳定性实验,结果显示在短期内不稳定性带来的风速测量误差仅为0.016 m/s。测定了双标准具的频谱曲线,通过对标准具频谱曲线的分析显示:测量误差在测量的动态范围内随着速度的增大而增大,随着测量脉冲次数的增加而减少,同时速度的测量误差随着高度的增加而加大,在5 km时最大测量速度误差为0.6 m/s。