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

Krystian L Wlodarczyk1, Emma Bryce2, Noah Schwartz3

  • 1Institute of Photonics and Quantum Sciences, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom.

The Review of Scientific Instruments
|March 6, 2014
PubMed
Summary

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This summary is machine-generated.

A novel stacked array piezoelectric deformable mirror (SA-PDM) prototype demonstrates effective high-power laser beam shaping for improved laser machining. This scalable, low-cost technology offers precise control for advanced manufacturing applications.

Area of Science:

  • Optics and Photonics
  • Materials Science
  • Laser Technology

Background:

  • Deformable mirrors are crucial for adaptive optics and laser beam control.
  • Existing technologies may face limitations in scalability, cost, or performance for high-power applications.
  • Piezoelectric actuators offer precise surface control for optical elements.

Purpose of the Study:

  • To present a prototype of a scalable, potentially low-cost stacked array piezoelectric deformable mirror (SA-PDM).
  • To characterize the performance of the SA-PDM, including actuator stroke, mirror sag, and hysteresis.
  • To demonstrate the SA-PDM's capability for high-power laser beam shaping and its application in laser machining.

Main Methods:

  • Fabrication and characterization of a 35-element SA-PDM prototype.

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  • Measurement of actuator stroke (2 μm maximum).
  • Quantification of mirror sag (1.4 μm) and hysteresis error (±200 nm).
  • Experimental validation using high-power laser beam shaping and subsequent laser machining.

    • Main Results:

    • Successful demonstration of a functional SA-PDM prototype with specified performance metrics.
    • Achieved precise control over laser beam profiles using the SA-PDM.
    • Obtained various beam shapes, leading to improved laser machining outcomes.
    • The SA-PDM exhibited a maximum actuator stroke of 2 μm, a mirror sag of 1.4 μm, and a hysteresis error of ±200 nm.

    Conclusions:

    • The developed SA-PDM is a viable technology for high-power laser beam shaping.
    • The prototype's performance indicates its potential for enhancing laser machining processes.
    • The scalable and potentially low-cost nature of the SA-PDM makes it attractive for industrial applications.