Fig. 3: Wavelength tunability.
From: Photon deceleration in plasma wakes generates single-cycle relativistic tunable infrared pulses
The data point with central wavelength of 9.4 μm corresponds to that shown in Fig. 2 and the detailed XFROG data for other four cases are shown in Supplementary Figs. 11–14. The data points for IR energy are averaged over 240 shots. The wavelengths are shown on a logarithmic scale. The horizontal bars represent the wavelength ranges (FWHM) of the accumulated IR energy. The vertical bars represent the standard deviation of IR energy. The solid orange triangles correspond to the estimated normalized vector potential a0. The black dashed line marks the value of a0 = 1.
