Description of the wavevector dispersion of surface plasmon-phonon-polaritons
英文摘要：
We reported here the results of the calculations of wavevector dispersion of oscillations frequencies, $ω'(k)$, and damping $ω''(k)$ of the surface plasmon phonon polaritons (\mbox{SPPhP}) for the heavy-doped GaN sample. We showed that $ω'(k)$- dependence consists of the three branches with the specific anticrossing behavior due to the interaction of surface plasmon polariton (SPP) with surface phonon polariton(SPhP). The strong renormalization of the damping $ω''(k)$ in the vicinity of the anticrossing region was found. The obtained dispersions of the $ω'(k)$ and $ω''(k)$ were applied for the analytical analysis of exact electrodynamic simulation of the resonant behavior of the reflectivity spectrum of the n-GaN grating.
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