title: End correction in the quasi-fast Hankel transform for optical propagation problems.
abstract: An explicit evaluation is made of a simple end correction to the quasi-fast Hankel-transform algorithm. Application to a Gaussian beam shows that for a given accuracy, the use of this end correction permits a reduction of a factor of 8 in storage as well as a factor of 8 in running time.
authors.forename: G P
authors.initials: GP
authors.lastname: Agrawal
authors.forename: M
authors.initials: M
authors.lastname: Lax