Ultrafast photographic investigation on laser ablation of liquid metals

Zsolt Toth; Tomi Smausz; Bela Hopp; Ferenc Ignacz; Zoltan Kantor; Tamas Szoerenyi; Zsolt Bor

doi:10.1117/12.320996

19 August 1998 Ultrafast photographic investigation on laser ablation of liquid metals

Zsolt Toth, Tomi Smausz, Bela Hopp, Ferenc Ignacz, Zoltan Kantor, Tamas Szoerenyi, Zsolt Bor

Proceedings Volume 3573, OPTIKA '98: 5th Congress on Modern Optics; (1998) https://doi.org/10.1117/12.320996
Event: OPTIKA '98: Fifth Congress on Modern Optics, 1998, Budapest, Hungary

Abstract

The application of laser pulses as `photographic flash' gives the possibility to record ultrafast phenomena. Since the duration of the laser pulses may be tuned from fs to cw, it is easy to choose a right laser source to resolve the time domain to be investigated. In this study excimer laser ablation of molten metal targets was followed by ultrafast photography based on delayed dye laser pulses. Molten tin and bismuth were ablated in vacuum by an ArF excimer laser. Pictures of the surface and the ablated material were taken at different moments after the start of the excimer laser pulse with temporal resolution of 1 ns. The series of snapshots contain information on the initial phase of plume formation in the ns time regime, and on liquid motion (surface waves, protuberances, liquid jet formations, splashing) in microsecond time scale. The important result of this study is the registration of the processes leading to droplet emission from the ablated target surface, because the elimination of droplets is a crucial requirement in depositing thin films by the pulsed laser deposition technique.

Citation Download Citation

Zsolt Toth, Tomi Smausz, Bela Hopp, Ferenc Ignacz, Zoltan Kantor, Tamas Szoerenyi, and Zsolt Bor "Ultrafast photographic investigation on laser ablation of liquid metals", Proc. SPIE 3573, OPTIKA '98: 5th Congress on Modern Optics, (19 August 1998); https://doi.org/10.1117/12.320996

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