title: Self-adaptive optical systems for long-distance flying optics.
abstract: The focusing characteristics of long-distance flying optics were studied systemically for TEM(mn) Gaussian beams. The results show that the ABCD law of parameter q can be extended to Gaussian modes of any order when waist radius w in the imaginary part of parameter q is replaced by Rayleigh range Z(R) of a certain resonator in the equation. The difference between the real focal length and the geometric focal length, defined as Df, 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 were consistent.
authors.affiliation: Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, China. zgcheng@mail.shcnc.ac.cn
authors.forename: Zhaogu
authors.initials: Z
authors.lastname: Cheng
authors.forename: Zhiping
authors.initials: Z
authors.lastname: Zhang
authors.forename: Jianqiang
authors.initials: J
authors.lastname: Zhu