title: Segmented bimorph mirrors for adaptive optics: segment design and experiment.
abstract: We discuss the concept of lightweight segmented bimorph mirrors for adaptive optics. The segment consists of a monocrystal silicon substrate actuated by an array of in-plane piezoceramic (PZT) actuators with honeycomb electrodes. We focus on technological aspects of the segment design that are critical for space applications and describe a single segment demonstrator. The morphing capability of the segment is evaluated experimentally. We also discuss the local deformations (dimples) associated with the shape of the electrodes acting on the PZT array.
authors.forename: Renaud
authors.initials: R
authors.lastname: Bastaits
authors.forename: David
authors.initials: D
authors.lastname: Alaluf
authors.forename: Mihaita
authors.initials: M
authors.lastname: Horodinca
authors.forename: Iulian
authors.initials: I
authors.lastname: Romanescu
authors.forename: Ioan
authors.initials: I
authors.lastname: Burda
authors.forename: Grégory
authors.initials: G
authors.lastname: Martic
authors.forename: Gonçalo
authors.initials: G
authors.lastname: Rodrigues
authors.forename: André
authors.initials: A
authors.lastname: Preumont