1-D spatially resolved electric fields in atmospheric pressure nanosecond pulse discharges using ultrashort laser pulses

Benjamin M. Goldberg, Stephan Reuter, Arthur Dogariu, Richard B. Miles

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We present a novel experimental setup for electric field measurements in high pressure plasma discharges using the electric field induced second harmonic generation method (E-FISH). While the E-FISH effect has been known of for some time, recent advances in laser and detection technology have allowed the method to be utilized for spatial measurements of the electric field, opening the door to exciting new possibilities in the world of plasma physics. In this manuscript, a cylindrical lens is used to focus the femtosecond laser light to a line and an intensified charge coupled device (ICCD) is used for detection, allowing for 1-D spatial sensitivity on the order of ~50 µm. Measurements have been carried out verifying the spatial sensitivity using a spatially periodic, localized electric field. Additionally, calibrated electric field measurements have been completed in an Argon atmospheric pressure plasma jet powered by a nanosecond pulse dielectric barrier discharge. Calibrated electric field measurements have been completed with a time resolution of 500 picoseconds, and the field was shown to propagate as an ionization wave, with a speed of ~0.3 mm/ns.

Original languageEnglish (US)
Title of host publicationAIAA Scitech 2019 Forum
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624105784
DOIs
StatePublished - Jan 1 2019
EventAIAA Scitech Forum, 2019 - San Diego, United States
Duration: Jan 7 2019Jan 11 2019

Publication series

NameAIAA Scitech 2019 Forum

Conference

ConferenceAIAA Scitech Forum, 2019
CountryUnited States
CitySan Diego
Period1/7/191/11/19

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering

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  • Cite this

    Goldberg, B. M., Reuter, S., Dogariu, A., & Miles, R. B. (2019). 1-D spatially resolved electric fields in atmospheric pressure nanosecond pulse discharges using ultrashort laser pulses. In AIAA Scitech 2019 Forum (AIAA Scitech 2019 Forum). American Institute of Aeronautics and Astronautics Inc, AIAA. https://doi.org/10.2514/6.2019-1508