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Updated: May 25, 2026
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Published on: February 4, 2017
Temporal and spatial characterization of a pulsed gas jet by a compact high-speed high-sensitivity second-harmonic
1Italian Institute of Technology, Genova, Italy. fernando.brandi@iit.it
Abstract:
A compact modular high-speed high-sensitivity second-harmonic interferometer is used to characterize a pulsed gas jet. The temporal evolution of the line-integrated gas density is measured with a resolution of 1 μs revealing detailed information on its dynamics. The actual radial gas density distribution in the jet is obtained applying the Abel's inversion method. The sensitivity of the interferometer is 1 mrad, and its robustness, compactness and modularity make the instrument suitable for practical application. Possible use of the instrument in monitoring cluster formation, and phase-dispersion microscopy is discussed.
