Fig. 2: Measurement of the beam with radial polarization.
From: Complete spatiotemporal and polarization characterization of ultrafast vector beams
a, b x-projection of the spectrum \(S_x\)/intensity \(I_x\); c, d total spectrum \(S_{{\mathrm{total}}}\)/intensity \(I_{{\mathrm{total}}}\); e, f ellipticity \(\varepsilon\); and g, h polarization azimuth \(\chi\). a, c, e, g spatiospectral dependence; b, d, f, h spatiotemporal dependence. Results in the spectral domain are represented as a function of the wavelength \(\lambda\), and the time is denoted by \(t\). The azimuthal coordinate \(\theta\) was sampled in 90 points with a radius of 3 mm. The input laser pulses had a 10 nm (full width at half maximum) spectral bandwidth and 100 fs duration. The results presented in this and following figures are cut below the 1% of the spectral/temporal peak signal. The total spectrum and intensity are normalized to 1.
