title: Far-field intensity distribution, M2 factor, and propagation of flattened Gaussian beams.
abstract: Explicit expressions for the M(2) factor and field distribution of flattened Gaussian beams that propagate through an unapertured paraxial ABCD system are derived and illustrated with numerical examples. We show that the far-field expression of flattened Gaussian beams can be readily obtained by use of our results.
authors.affiliation: Institute of Laser Physics and Chemistry, Sichuan University, Chengdu 610064, China. badalu@pridns.scuu.edu.cn
authors.forename: B
authors.initials: B
authors.lastname: Lü
authors.forename: B
authors.initials: B
authors.lastname: Zhang
authors.forename: S
authors.initials: S
authors.lastname: Luo