Ultrafast Advanced Optical Diagnostics for Large Scale Facilities

ORAL  · Invited

Abstract

The talk will present recent developments and results using advanced optical diagnostics based on ultrafast lasers for non-intrusive measurements in gases and plasmas with high temporal and spatial resolution. Powered by femtosecond lasers, these diagnostics rely on nonlinear optical effects to enable measurements such as electron and gas densities, species concentration, temperature, flow velocity and electric fields in low temperature plasma devices and other gaseous applications. The talk will focus on deployments of mobile ultrafast laser-based systems in large scale facilities, and will present results on measuring velocity, temperature and species in plasma devices and hypersonic facilities.

*Funding for this work was provided by the Air Force Office of Scientific Research, the Office of Naval Research, and the U.S. Department of Energy (DOE).

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Publication: 1. S. Cohen, E.S. Evans, L. David, P. Jandovitz, S.P. Vinoth, E. Palmerduca, C.P.S. Swanson, G. Jusino-Gonzales, and A. Dogariu, "Laboratory study of the PFRC-2's initial plasma densification stages," Phys. Plasmas 30, 102503 (2023).
2. A. Dogariu, S. A. Cohen, P. Jandovitz, S. Vinoth, E.S. Evans, and C.P.S. Swanson, "A diagnostic to measure neutral atom density in fusion-research plasmas," Rev. Sci. Instrum. 93, 093519 (2022) DOI: 10.1063/5.0101683
3. V. Gopal, D. Palmquist, L. Maddalena, L. E. Dogariu, and A. Dogariu, "FLEET velocimetry measurements in the ONR-UTA arc-jet wind tunnel," Exp. Fluids 62(10), 212 (2021).
4. A. Dogariu, L. Dogariu, M. Smith, B. McManamen, J. Lafferty, and R. Miles, "Velocity and Temperature Measurements in Mach 18 Nitrogen Flow at Tunnel 9," AIAA SciTech 2021 Forum, 0020 (2021).
5. L. E. Dogariu, A. Dogariu, R. B. Miles, M. S. Smith, and E. C. Marineau, "Femtosecond Laser Electronic Excitation Tagging Velocimetry in a Large-Scale Hypersonic Facility," AIAA Journal 57, 4725 (2019).

Presenters

  • Arthur Dogariu

    • Texas A&M University and Princeton University
    • Princeton University and Texas A&M University
    • Princeton University
    • Texas A&M University College Station

Authors

  • Arthur Dogariu

    • Texas A&M University and Princeton University
    • Princeton University and Texas A&M University
    • Princeton University
    • Texas A&M University College Station