title: Scalable stacked array piezoelectric deformable mirror for astronomy and laser processing applications.
abstract: A prototype of a scalable and potentially low-cost stacked array piezoelectric deformable mirror (SA-PDM) with 35 active elements is presented in this paper. This prototype is characterized by a 2 μm maximum actuator stroke, a 1.4 μm mirror sag (measured for a 14 mm × 14 mm area of the unpowered SA-PDM), and a ±200 nm hysteresis error. The initial proof of concept experiments described here show that this mirror can be successfully used for shaping a high power laser beam in order to improve laser machining performance. Various beam shapes have been obtained with the SA-PDM and examples of laser machining with the shaped beams are presented.
authors.affiliation: Institute of Photonics and Quantum Sciences, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom.
authors.forename: Krystian L
authors.initials: KL
authors.lastname: Wlodarczyk
authors.affiliation: School of Engineering and Science, University of the West of Scotland, Paisley PA1 2BE, United Kingdom.
authors.forename: Emma
authors.initials: E
authors.lastname: Bryce
authors.affiliation: UK Astronomy Technology Centre, Royal Observatory, Edinburgh EH9 3HJ, United Kingdom.
authors.forename: Noah
authors.initials: N
authors.lastname: Schwartz
authors.affiliation: Institute of Photonics and Quantum Sciences, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom.
authors.forename: Mel
authors.initials: M
authors.lastname: Strachan
authors.affiliation: School of Engineering and Science, University of the West of Scotland, Paisley PA1 2BE, United Kingdom.
authors.forename: David
authors.initials: D
authors.lastname: Hutson
authors.affiliation: Institute of Photonics and Quantum Sciences, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom.
authors.forename: Robert R J
authors.initials: RR
authors.lastname: Maier
authors.affiliation: UK Astronomy Technology Centre, Royal Observatory, Edinburgh EH9 3HJ, United Kingdom.
authors.forename: David
authors.initials: D
authors.lastname: Atkinson
authors.affiliation: UK Astronomy Technology Centre, Royal Observatory, Edinburgh EH9 3HJ, United Kingdom.
authors.forename: Steven
authors.initials: S
authors.lastname: Beard
authors.affiliation: UK Astronomy Technology Centre, Royal Observatory, Edinburgh EH9 3HJ, United Kingdom.
authors.forename: Tom
authors.initials: T
authors.lastname: Baillie
authors.affiliation: UK Astronomy Technology Centre, Royal Observatory, Edinburgh EH9 3HJ, United Kingdom.
authors.forename: Phil
authors.initials: P
authors.lastname: Parr-Burman
authors.affiliation: School of Engineering and Science, University of the West of Scotland, Paisley PA1 2BE, United Kingdom.
authors.forename: Katherine
authors.initials: K
authors.lastname: Kirk
authors.affiliation: Institute of Photonics and Quantum Sciences, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom.
authors.forename: Duncan P
authors.initials: DP
authors.lastname: Hand