title: Interferometric analysis of laser-driven cylindrically focusing shock waves in a thin liquid layer.
abstract: Shock waves in condensed matter are of great importance for many areas of science and technology ranging from inertially confined fusion to planetary science and medicine. In laboratory studies of shock waves, there is a need in developing diagnostic techniques capable of measuring parameters of materials under shock with high spatial resolution. Here, time-resolved interferometric imaging is used to study laser-driven focusing shock waves in a thin liquid layer in an all-optical experiment. Shock waves are generated in a 10 µm-thick layer of water by focusing intense picosecond laser pulses into a ring of 95 µm radius. Using a Mach-Zehnder interferometer and time-delayed femtosecond laser pulses, we obtain a series of images tracing the shock wave as it converges at the center of the ring before reemerging as a diverging shock, resulting in the formation of a cavitation bubble. Through quantitative analysis of the interferograms, density profiles of shocked samples are extracted. The experimental geometry used in our study opens prospects for spatially resolved spectroscopic studies of materials under shock compression.
authors.affiliation: Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts, 02139, USA. dveysset@mit.edu.|Institute for Soldier Nanotechnologies, Massachusetts Institute of Technology, Cambridge, Massachusetts, 02139, USA. dveysset@mit.edu.
authors.forename: David
authors.identifier: http://orcid.org/0000-0003-4473-1983
authors.initials: D
authors.lastname: Veysset
authors.affiliation: Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts, 02139, USA.|Institute for Soldier Nanotechnologies, Massachusetts Institute of Technology, Cambridge, Massachusetts, 02139, USA.
authors.forename: Alexei A
authors.initials: AA
authors.lastname: Мaznev
authors.affiliation: Institut Molécules et Matériaux du Mans, UMR CNRS 6283, Université du Maine, Le Mans, 72085, France.
authors.forename: Thomas
authors.initials: T
authors.lastname: Pezeril
authors.affiliation: Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts, 02139, USA.
authors.forename: Steven
authors.identifier: http://orcid.org/0000-0003-0755-7461
authors.initials: S
authors.lastname: Kooi
authors.affiliation: Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts, 02139, USA.|Institute for Soldier Nanotechnologies, Massachusetts Institute of Technology, Cambridge, Massachusetts, 02139, USA.
authors.forename: Keith A
authors.initials: KA
authors.lastname: Nelson