Direct optimization of femtosecond laser ablation using adaptive wavefront shaping

S. Campbell, S. M F Triphan, Reda Mohamed El-Sayed El-Agmy, A. H. Greenaway, D. T. Reid

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

We introduce an approach based on using an iterative simulated annealing algorithm to drive the outcome of femtosecond laser ablation towards a specific target shape by using a two-dimensional deformable mirror. Unlike previous work combining adaptive optics and laser machining we use the machining outcome itself as the fitness parameter for the optimization procedure. Single-pulse ablation features with programmable aspect ratios and dimensions as small as 2.5?m are faithfully reproduced by the technique in a chromium-on-glass test sample. © IOP Publishing Ltd.

Original languageEnglish
Pages (from-to)1100-1104
Number of pages5
JournalJournal of Optics A: Pure and Applied Optics
Volume9
Issue number11
DOIs
Publication statusPublished - 1 Nov 2007

Keywords

  • Adaptive optics
  • Femtosecond laser ablation
  • Femtosecond machining
  • Laser machining
  • Optimization
  • Simulated annealing
  • Ti:sapphire

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