Extended Data Fig. 6: Time evolution of the TM01 weight of the THz SPPs.
From: Coherent surface plasmon polariton amplification via free-electron pumping
The TM01 weight \({c}_{01}\) (taken at the transverse cross-section where it is maximal) gains from an initial value of 0.35 to a dominant value of 0.95 at 5 ps.
