Scalable stacked array piezoelectric deformable mirror for astronomy and laser processing applications

Krystian L. Wlodarczyk, Emma Bryce, Noah Schwartz, Mel Strachan, David Hutson, Robert R. J. Maier, David Atkinson, Steven Beard, Tom Baillie, Phil Parr-Burman, Katherine Kirk, Duncan P. Hand

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)

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.

Original languageEnglish
Article number024502
Number of pages10
JournalREVIEW OF SCIENTIFIC INSTRUMENTS
Volume85
Issue number2
DOIs
Publication statusPublished - 12 Feb 2014

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