title: Comment on "calculation of electromagnetic field components for a fundamental Gaussian beam".
abstract: In this Comment, we point out that the ninth-order expressions for electromagnetic fields for a fundamental Gaussian beam given by Wang and Webb [Phys. Rev. E 72, 046501 (2005)] are incorrect. The correct expressions for the electromagnetic field components up to ninth order are given.
authors.affiliation: Surface Physics Laboratory, Department of Physics, Fudan University, Shanghai 200433, China.
authors.forename: Hong
authors.initials: H
authors.lastname: Luo
authors.forename: Shiyang
authors.initials: S
authors.lastname: Liu