Figure 4
Specification of the UPC and s-SPDC pump. (a) Spectrum of the UPC pump pulse. The spectral FWHM width is 0.6 nm. (b) Auto-correlation curve of the UPC pump pulse. A scaling factor of \(\sqrt{2}\) was used to deduce the temporal duration to be 4.3 ps under the assumption of a Gaussian profile. (c) Spectrum of SPDC pump pulse produced by SHG process of the Er pulse. The spectral FWHM width is 0.6 nm as well. (d) Cross-correlation curve between the UPC and SPDC idler pulses. The active duration of the idlers was estimated to be 4.1 ps under the assumption of a convolution between Gaussian profiles.
