During the last two decades, micromaching materials with ultrashort pulser lasers with pulse duration in the picosecond (ps) and femtosecond (fs) range opened up the possibility of material micro structuring of material removal with high precision and minimal damage. Due to the ultra-high intensity of focussed femtosecond pulses, nonlinear absorption can be induced at the focus leading to highly localised material ablation. The work presented in this thesis is primarily concerned with the process of femtosecond laser ablation or micromachining of metallic materials with a 180fs infra-red (775mm) focused laser beam.
| Identifer | oai:union.ndltd.org:bl.uk/oai:ethos.bl.uk:633011 |
| Date | January 2012 |
| Creators | Zhang, Wei |
| Publisher | University of Liverpool |
| Source Sets | Ethos UK |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
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