Due to substantial peak-to-peak fluctuations (greater than 30%) in the pump laser pulse energy, two photodetectors (PD1 and PD2) were used to simultaneously record the pulse energies of both the pump laser and the dye laser. PD1 monitored the pump pulse energy to enable normalization of the dye pulse energy, which was measured by PD2. Data acquisition was conducted using a Field Programmable Gate Array (FPGA)-based Qscope board operating at 250 MS/s.