Microwave propagation along nonuniform plasma column as surface plasmon

Formation and propagation of surface plasmons (SPs) of microwaves (MWs) along a dense non-uniform plasma column were investigated by employing the finite-difference time-domain method and evidenced by experiment of argon helicon plasma. The effects of plasma density, incident frequency, and radius of plasma column on the SP features were discussed. Results showed that when the MW frequency and the density distribution of plasma column satisfy suitable conditions, SPs can be excited on the surface of a uniform plasma column when the frequency is 2–5 times of the MW, while inside a nonuniform plasma column when the plasma frequency is only a little higher (about 5%–20%) than the MW. The SP wavelength depends on the plasma density for a given incident MW frequency. The forward scatter MW field will be enhanced significantly when SP appears along the nonuniform plasma column.

[1]  J. Ouyang,et al.  Influence of neutral depletion on blue core in argon helicon plasma , 2021, Physics of Plasmas.

[2]  R. Wirz,et al.  Tunable reflectionless absorption of electromagnetic waves in a plasma–metamaterial composite structure , 2020, Plasma Sources Science and Technology.

[3]  J. Ouyang,et al.  Diagnosis of helicon plasma by local OES , 2020, Plasma Sources Science and Technology.

[4]  Jia-chun Wang,et al.  Simulation of EM wave propagation along a femtosecond laser plasma filament , 2019, Results in Physics.

[5]  J. Ouyang,et al.  Axial profiles of argon helicon plasma by optical emission spectroscope and Langmuir probe , 2019, Plasma Science and Technology.

[6]  N. Sternberg,et al.  Plasmon resonances, anomalous transparency, and reflectionless absorption in overdense plasmas , 2018 .

[7]  J. Ouyang,et al.  Numerical investigation of a microwave-band surface plasmon excited on an overdense plasma cylinder , 2016 .

[8]  Ouyang Jiting,et al.  Microwaves Scattering by Underdense Inhomogeneous Plasma Column , 2016 .

[9]  K. Yasumoto,et al.  Surface plasmon resonant scattering in metal-coated dielectric nanocylinders , 2014 .

[10]  Minghai Liu,et al.  Production of planar-type overdense plasma with resonant excitation of surface plasmon polaritons , 2009 .

[11]  Y. Bliokh,et al.  Broad-band polarization-independent absorption of electromagnetic waves by an overdense plasma , 2009, 0908.2851.

[12]  L. You,et al.  Excitation of surface plasmons at the boundary of overdense plasma , 2008 .

[13]  Feng Liu,et al.  Visual phenomena of surface plasmon polaritons at the dielectric-plasma interface , 2008 .

[14]  Ge Wang,et al.  Total absorption of electromagnetic radiation in overdense plasma , 2006 .

[15]  Dennis M. Sullivan,et al.  Electromagnetic Simulation Using the FDTD Method , 2000 .

[16]  D. R. Tilley,et al.  Surface Polaritons: Electromagnetic Waves at Surfaces and Interfaces , 1983 .

[17]  A. Trivelpiece,et al.  Experimental investigations of the propagation of surface waves along a plasma column , 1982 .

[18]  F. Kong,et al.  Collision effects on propagation characteristics of electromagnetic waves in a sub-wavelength plasma slab of partially ionized dense plasmas , 2018 .

[19]  S. Miyagi,et al.  Plasma metamaterials as cloaking and nonlinear media , 2016 .

[20]  M. Moisan,et al.  Experimental Evidence of Parametric Instabilities in an Unmagnetized Plasma Subjected to a Strong H.F. Electric Field , 1975 .