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

    51 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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