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Fluence Threshold Behaviour on Ablation and Bubble Formation in Pulsed Laser Ablation in Liquids
Author(s) -
Reich Stefan,
Schönfeld Patrick,
Letzel Alexander,
Kohsakowski Sebastian,
Olbinado Margie,
Gökce Bilal,
Barcikowski Stephan,
Plech Anton
Publication year - 2017
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201601198
Subject(s) - fluence , ablation , bubble , liquid bubble , materials science , laser ablation , nanosecond , laser , optics , cavitation , physics , mechanics , aerospace engineering , engineering
The ablation yield and bubble‐formation process during nanosecond pulsed‐laser ablation of silver in water are analysed by stroboscopic videography, time‐resolved X‐ray radiography and in situ UV/Vis spectroscopy. This process is studied as function of lens–target distance and laser fluence. Both the ablation yield and the bubble‐cavitation process exhibit threshold behaviour as a function of fluence, which is linked to the efficiency of coupling of energy at the water/target interface. Although ablation happens below this threshold, quantitative material emission is linked to bubble formation. Above the threshold, both bubble size and ablation show linear behaviour.