title: Self-characterization of linear and nonlinear adaptive optics systems.
abstract: We present methods used to determine the linear or nonlinear static response and the linear dynamic response of an adaptive optics (AO) system. This AO system consists of a nonlinear microelectromechanical systems deformable mirror (DM), a linear tip-tilt mirror (TTM), a control computer, and a Shack-Hartmann wavefront sensor. The system is modeled using a single-input-single-output structure to determine the one-dimensional transfer function of the dynamic response of the chain of system hardware. An AO system has been shown to be able to characterize its own response without additional instrumentation. Experimentally determined models are given for a TTM and a DM.
authors.affiliation: Department of Electrical and Computer Engineering, University of Victoria, Victoria, BC, Canada. phampton@engr.uvic.ca
authors.forename: Peter J
authors.initials: PJ
authors.lastname: Hampton
authors.forename: Rodolphe
authors.initials: R
authors.lastname: Conan
authors.forename: Onur
authors.initials: O
authors.lastname: Keskin
authors.forename: Colin
authors.initials: C
authors.lastname: Bradley
authors.forename: Pan
authors.initials: P
authors.lastname: Agathoklis