Figure 7
(a)The comparison of E-field versus frequency three curves. Curve 1 \(l_{r} = 24.1\text{ mm}\) without cell(blue dotted line), curve 21 \(l_{r} = 19.2\text{ mm}\) without cell(red dotted line), curve 21 \(l_{r} = 19.2\text{ mm}\) with cell(yellow solid line). (b)Simulated transient response of E field strength. (c) The insert shows a zoom in the transient response. (d-g) The intensity graphs show the measured time dependent out-of-plane electric field E(t) distribution at successive times t = 0.18 ns (d), 0.26 ns (e), 0.48 ns (f), and 0.7 ns (g), respectively