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Multi-frame interferometric imaging with a femtosecond stroboscopic pulse train for observing irreversible phenomena

Author(s)
Martynowych, Dmitro; Veysset, David Georges; Maznev, Alexei; Sun, Yuchen; Kooi, Steven E; Nelson, Keith Adam; ... Show more Show less
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Abstract
We describe a high-speed single-shot multi-frame interferometric imaging technique enabling multiple interferometric images with femtosecond exposure time over a 50 ns event window to be recorded, following a single laser-induced excitation event. The stroboscopic illumination of a framing camera is made possible through the use of a doubling cavity that produces a femtosecond pulse train that is synchronized to the gated exposure windows of the individual frames of the camera. The imaging system utilizes a Michelson interferometer to extract phase and ultimately displacement information. We demonstrate the method by monitoring laser-induced deformation and the propagation of high-amplitude acoustic waves in a silicon nitride membrane. The method is applicable to a wide range of fast irreversible phenomena such as crack branching, shock-induced material damage, cavitation, and dielectric breakdown.
Date issued
2020-03
URI
https://hdl.handle.net/1721.1/129715
Department
Massachusetts Institute of Technology. Department of Chemistry; Massachusetts Institute of Technology. Institute for Soldier Nanotechnologies
Journal
Review of Scientific Instruments
Publisher
AIP Publishing
Citation
Martynowych, Dmitro et al. "Multi-frame interferometric imaging with a femtosecond stroboscopic pulse train for observing irreversible phenomena." Review of Scientific Instruments 91, 3 9 (March 2020): 033711 © 2020 Author(s)
Version: Author's final manuscript
ISSN
0034-6748
1089-7623

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