Enhanced filament ablation of metals based on plasma grating in air
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062 (China)
We demonstrate efficient ablation of metals with filamentary plasma grating generated by two intense blue femtosecond filaments and a third focused infrared pulse. This scheme leads to significant promotion of ablation efficiency on metal targets in air in comparison with single infrared or blue filament with equal pulse energy. The reason is that the blue plasma grating firstly provides stronger intensity and a higher density of background electrons, then the delayed infrared pulse accelerates local electrons inside the plasma grating. These two processes finally results in robustly increased electron density and highly ionized metallic atoms.
- OSTI ID:
- 22492380
- Journal Information:
- AIP Advances, Journal Name: AIP Advances Journal Issue: 9 Vol. 5; ISSN AAIDBI; ISSN 2158-3226
- Country of Publication:
- United States
- Language:
- English
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