Ultra high repetition rate (133 MHz) laser ablation of aluminum with 1.2-ps pulses View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

1999-12

AUTHORS

M. Lapczyna, K.P. Chen, P.R. Herman, H.W. Tan, R.S. Marjoribanks

ABSTRACT

This study reports on the multi-pulse ablation of aluminum foils by bursts of mode-locked pulses from a feedback-controlled Nd:glass laser (1054 nm). The 2-μs train consists of about 250 pulses of 1.2 ps duration and 7.5 ns pulse-to-pulse separation. The bursts provide a new mode of laser fluence delivery, combining long-pulse heating with the advantages of ultrashort laser material interactions. Results show that clean through-holes can be cut through 200-μm foils with a single pulse train. In holes produced using near-threshold machining, a 7:1 aspect ratio was observed with a taper half-angle of around 3°. The etch depths and surface morphology of the processed surfaces are qualitatively characterized for fluences between 80 J/cm2 and 9 kJ/cm2, and for a range of foil thicknesses 12.5–200 μm. More... »

PAGES

s883-s886

Journal

TITLE

Applied Physics A

ISSUE

Suppl 1

VOLUME

69

Author Affiliations

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s003390051552

DOI

http://dx.doi.org/10.1007/s003390051552

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1020721068


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