Direct optimization of femtosecond laser ablation using adaptive wavefront shaping

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...

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Bibliographic Details
Published in:Journal of optics. A, Pure and applied optics Pure and applied optics, 2007-11, Vol.9 (11), p.1100-1104
Main Authors: Campbell, S, Triphan, S M F, El-Agmy, R, Greenaway, A H, Reid, D T
Format: Article
Language:English
Subjects:
Biological and medical applications
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Industrial applications
Lenses, prisms, and mirrors
Optical elements, devices, and systems
Optics
Physics
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Summary: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 mum are faithfully reproduced by the technique in a chromium-on-glass test sample.
ISSN:1464-4258
1741-3567
DOI:10.1088/1464-4258/9/11/022