Fig. 3: Comparison of time traces with different pulse widths.

a τ = 4 ns; (b) τ = 7 ns; (c) τ = 10 ns. Dashed rectangles mark the expected pulse width τ and frequency bandwidth 1/τ, as (a) 4 ns and 250 MHz, (b) 7 ns and 143 MHz, and (c) 10 ns and 100 MHz, respectively. d Comparison of normalized FFT of temporal traces from (a–c) at ω_c/2π = 5.42 GHz.