研究了长距离飞行光学(flying optics)高斯光束聚焦特性, 理论研究表明：将某一特定谐振腔的瑞利长度ZR取代q参量虚部的光斑尺寸w时, q参量的ABCD定律可以从基模推广到高阶模或几个模的叠加, 并推导出飞行光学实际焦距与几何焦距之差Df的计算公式。为了精确控制飞行光学聚焦特性, 研制了一套自适应飞行光学聚焦特性控制仪, 实验和理论比较吻合。

The focusing characteristics of long distance flying optics were studied systemically for TEMmn Gaussian beams. The results show that the ABCD law of parameter q can be extended to Gaussian modes of any order when the waist radius w in the imaginary part of the parameter q is substituted by the Rayleigh range ZR of a certain resonator in the equation. The difference between the real focal length and geometric focal length, which was defined as Δf, was calculated for laser applications. A novel self-adaptive optical system was demonstrated for precisely controlling the focusing characteristics of long distance flying optics. Theoretical analyses and experimental results are consistent well.