Localized microwave plasma grid by laser-designation

Matthew R. Edwards, James B. Michael, Arthur Dogariu, Richard B. Miles

Research output: Contribution to conferencePaper

Abstract

The volumetric addition of energy into flowfields associated with high speed aircraft has the potential to provide drag reduction, flow control, and ignition speed improvements. Using a femtosecond laser system and a microwave cavity, we have shown the ability to deposit microwave energy at locations designated by the laser system. The temperature of the heated region has been measured as up to 3500-4000 K, with thermal energy deposition on the order of 10 mJ for centimeter scale laser designated lines. The microwave pulse may couple to the region excited by the laser pulse even after a 20 μs delay. We have also demonstrated an ability to write simple patterns with multiple laser beams, showing approximately equitable energy distribution across the formed grid. The ability to couple the microwave pulse to the designated region is shown to be not strongly dependent on the polarization and relative orientation of the microwave and laser systems.

Original languageEnglish (US)
StatePublished - Dec 6 2011
Event49th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition - Orlando, FL, United States
Duration: Jan 4 2011Jan 7 2011

Other

Other49th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition
CountryUnited States
CityOrlando, FL
Period1/4/111/7/11

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering

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  • Cite this

    Edwards, M. R., Michael, J. B., Dogariu, A., & Miles, R. B. (2011). Localized microwave plasma grid by laser-designation. Paper presented at 49th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, Orlando, FL, United States.