Fig. 4: Macroscopic calculations using experimentally determined pulse shapes in SiO2.
From: Onset of Bloch oscillations in the almost-strong-field regime
The electric field of the DUV pulses U and V emitted collinearly to A for Ipeak = 7 TW/cm2 (a), 14 TW/cm2 (b), and 23 TW/cm2 (c). The electric field was Fourier filtered to include only frequencies in the interval [4.2, 6.2] eV to suppress the much stronger fundamental field at Vis–IR wavelengths. d The raw spectrum I(ω) (black) and the Fourier filtered spectrum Ir(ω) (blue) at Ipeak = 14 TW/cm2. The spectrum \({{{{{{{\mathcal{F}}}}}}}}\{{P}^{{{{{{{{\rm{(NL)}}}}}}}}}\}\) calculated with the initial fundamental pulses at the beginning of the crystal is shown in green for comparison. e The Fourier filtered spectrum Ir(ω) as a function of intensity.
