Laser Doppler interferometer based on a solid Fabry–Perot etalon for measurement of surface velocity in shock experiments

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DOIResolve DOI: http://doi.org/10.1088/0957-0233/20/1/015302
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TypeArticle
Journal titleMeasurement Science & Technology
Volume20
Issue1
Pages# of pages: 7
SubjectFabry–Perot interferometer; shock wave; optical velocimeter
AbstractThis study presents an original optical system designed for measuring the free surface velocity for shock wave diagnostics. The system is based on a solid Fabry–Perot etalon interferometer coupled to a tunable, single frequency laser. The setup assembled for this purpose can measure velocities up to 200 m s−1 and has a resolution time of about 1 ns. This system was validated in shock experiments performed on thin aluminum samples. The shock waves were generated by a pulsed laser on a water confinement configuration and the surface velocity was measured on the opposite side of the sample. The signals obtained are in good agreement with numerical simulation and results found in the literature. This system presents an interesting alternative to the velocity interferometer system for any reflectors (VISAR) commonly used in shock experiments.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); NRC Industrial Materials Institute
Peer reviewedYes
NRC number50628
NPARC number15990718
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Record identifierbfebf3c7-f806-4a35-b39f-1ce9934532ef
Record created2010-08-24
Record modified2016-05-09
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