title: General propagation equation of flattened Gaussian beams.
abstract: The closed-form propagation equation of flattened Gaussian beams passing through a paraxial optical ABCD system, in which the linear gain and absorption media are included, is derived, and its general applicable advantage is illustrated with numerical examples.
authors.affiliation: Institute of Laser Physics and Chemistry, Sichuan University, Chengdu, China. badalu@sun450.scu.edu.cn
authors.forename: B
authors.initials: B
authors.lastname: Lü
authors.forename: S
authors.initials: S
authors.lastname: Luo