Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.14/101104
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- Title
- Study of the interplay of vaporisation, melt displacement and melt ejection mechanisms under single and multiple pulse irradiation
- Related
- Pacific International Conference on Applications of Lasers and Optics (2nd : 2006) (3 - 5 April 2006 : Melbourne)
- Related
- Brandt, Milan and Harvey, Erol. PICALO 2006 : conference proceedings 2006, Melbourne, Australia, April 3-5, 2006, p.277-282
- Publisher
- Orlando, Fla : Laser Institute of America
- Date
- 2006
- FoR/RFCD Code(s)
-
020400 Condensed Matter Physics
090600 Electrical and Electronic Engineering
- Author/Creator
- Fishburn, J. M
- Author/Creator
- Withford, Michael
- Author/Creator
- Coutts, D. W
- Author/Creator
- Piper, J. A
- Description
- We have used a combination of profilometry, high speed imaging and recoil measurements using a ballistic pendulum to calculate the amount of material removed due to mechanisms of vaporisation, melt displacement and melt ejection when ablating aluminium with a visible nanosecond laser. Single laser pulses are shown to induce material removal predominantly by the mechanism of melt displacement at fluences <1.5 J.cm-2, melt displacement and vapourisation at fluences between 1.5 and 7 J.cm-2, and melt ejection with smaller contributions due to melt displacement and vaporisation at fluences >7 J.cm-2. Studies of the effects of multiple laser pulses on target demonstrate the additional influence of cumulative heating and the geometric constraints of the ablation crater on material removal. The implications of this study on high resolution laser micromachining will be discussed.
- Description
- 6 page(s)
- Subject Keyword
- 020400 Condensed Matter Physics
- Subject Keyword
- 090600 Electrical and Electronic Engineering
- Subject Keyword
- nanosecond laser
- Subject Keyword
- plume
- Subject Keyword
- melt ejection
- Subject Keyword
- cumulative heating
- Subject Keyword
- micromachining
- Resource Type
- conference paper
- Organisation
- Macquarie University. Dept. of Physics
- Organisation
- Macquarie University. Office of the Deputy Vice-Chancellor (Research)
- Identifier
- http://hdl.handle.net/1959.14/101104
- Identifier
- ISBN:0912035846
- Identifier
- mq-rm-2006002800
- Language
- eng
- Reviewed
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