Apparatus to control and visualize the impact of a high-energy laser pulse on a liquid target

Alexander L. Klein, Detlef Lohse, Michel Versluis, Hanneke Gelderblom

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1 Citation (Scopus)

Abstract

We present an experimental apparatus to control and visualize the response of a liquid target to a laser-induced vaporization. We use a millimeter-sized drop as target and present two liquid-dye solutions that allow a variation of the absorption coefficient of the laser light in the drop by seven orders of magnitude. The excitation source is a Q-switched Nd:YAG laser at its frequency-doubled wavelength emitting nanosecond pulses with energy densities above the local vaporization threshold. The absorption of the laser energy leads to a large-scale liquid motion at time scales that are separated by several orders of magnitude, which we spatiotemporally resolve by a combination of ultra-high-speed and stroboscopic high-resolution imaging in two orthogonal views. Surprisingly, the large-scale liquid motion upon laser impact is completely controlled by the spatial energy distribution obtained by a precise beam-shaping technique. The apparatus demonstrates the potential for accurate and quantitative studies of laser-matter interactions.

Original languageEnglish
Article number095102
Number of pages20
JournalReview of Scientific Instruments
Volume88
Issue number9
DOIs
Publication statusPublished - 1 Sep 2017
Externally publishedYes

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