title: Error compensation in a pointing system based on Risley prisms.
abstract: Risley prisms are widely used for beam pointing in several optical systems. The exact solution for the inverse problem does not exist, except using numerical methods. However, the errors introduced by misalignment are usually greater than the approximation errors. We present a novel method to compensate alignment errors in pointing systems based on Risley prisms. The prism model that we used is based on paraxial approximation with an additional vector to compensate typical alignment errors. Simulation and experimental results show that the improvement in pointing accuracy is achievable even in comparison with exact ray tracing methods.
authors.forename: Beethoven
authors.initials: B
authors.lastname: Bravo-Medina
authors.forename: Marija
authors.initials: M
authors.lastname: Strojnik
authors.forename: Guillermo
authors.initials: G
authors.lastname: Garcia-Torales
authors.forename: Hector
authors.initials: H
authors.lastname: Torres-Ortega
authors.forename: Ruben
authors.initials: R
authors.lastname: Estrada-Marmolejo
authors.forename: Anuar
authors.initials: A
authors.lastname: Beltrán-González
authors.forename: Jorge L
authors.initials: JL
authors.lastname: Flores