Experimental study of electromagnetic wave scattering from a gyrotropic gaseous plasma column
Abstract
We experimentally demonstrate the controlled scattering of incident transverse-electric electromagnetic waves from a gyrotropic magnetized plasma cylindrical discharge. Scattered electromagnetic waves can bend left and right by changing the external magnetic field of a plasma rod. Measured scattered wavefronts are in good agreement with electromagnetic simulations. A gyrotropic response is observed for incident wave frequencies ranging from 3.5 to 5.6 GHz for conditions corresponding to a ratio of cyclotron frequency to plasma frequency, ωce/ωp≈ 0.16. The observation of a gyrotropic response from cylindrical plasma discharges paves the way for their use as building blocks for future devices such as magnetized plasma photonic crystals, topological insulators, plasma metamaterials, non-reciprocal waveguide structures, and other devices, which require a tunable gyrotropic response from centimeter to meter-scale materials with application-specific geometry.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- May 30, 2022
- Source ID
- 10.1063/5.0095038
Entities
People
- Benjamin Wang
- Hossein Mehrpour Bernety
- Jesse A. Rodríguez
- Luc Houriez
- Mark Cappelli
Organizations
- Air Force Office of Scientific Research
- Stanford University