title: Design of a low-loss off-axis beam expander.
abstract: A method is given for the build up of simple off-axis beam expanders for Gaussian beams with low aberrations. In particular we show that it is possible to correct exactly the astigmatism in such a system. A realistic example is given.
authors.forename: P
authors.initials: P
authors.lastname: Hello
authors.forename: C N
authors.initials: CN
authors.lastname: Man