Application of adaptive optics to nanosecond pulsed laser micro-machining (invited presentation)

Duncan P. Hand, Jonathan P. Parry, Rainer J Beck, Rhys Carrington, Andrew Waddie, Nick Weston, Jonathan D. Shephard

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Adaptive optics, although originally developed for correcting aberrations in astronomical telescopes, also offer the capability to rapidly alter the intensity profile of a laser beam. Such a flexible beam shaping tool is highly attractive for many laser-based manufacturing techniques, allowing dynamic changes of the intensity profile in and around focus, both in-process and to switch between optimised beam shapes for different processes using the same laser. Here we focus on the application of a three different types of adaptive optic to nanosecond pulsed laser machining applications. Focal beam shaping results using (i) a piezoelectric deformable mirror; (ii) a bimorph mirror and (iii) a liquid crystal spatial light modulator are presented and comparisons made. Initial results obtained by applying these adaptive optics to laser micromachining applications using a nanosecond pulsed laser are shown.

Original languageEnglish
Title of host publication4th Pacific International Conference on Applications of Lasers and Optics, PICALO 2010
Publication statusPublished - 2010
Event4th Pacific International Conference on Applications of Lasers and Optics - Wuhan, China
Duration: 23 Mar 201025 Mar 2010

Conference

Conference4th Pacific International Conference on Applications of Lasers and Optics
Abbreviated titlePICALO 2010
CountryChina
CityWuhan
Period23/03/1025/03/10

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