title: Focusing of spherical Gaussian beams.
abstract: Simple procedures and formulas for tracing the characteristics of a spherical Gaussian beam through a train of lenses or mirrors are described which are analogous to those used in geometrical optics to trace repeated images through an optical train.
authors.affiliation: Stanford University, Mechanical Engineering Department, High Temperature Gasdynamics Laboratory, Stanford, California 94305, USA.
authors.forename: S A
authors.initials: SA
authors.lastname: Self