Fig. 2: Confirming the detection of Oaq with fs-TALIF.
From: Imaging solvated oxygen atoms with a femtosecond laser
a The on-resonance, laser background-subtracted O fluorescence signal, recorded with the ICCD gated to capture the laser pulse and TALIF signal in water. The location of the water surface is denoted by the dashed red line. b The time-delayed, on-resonance O fluorescence signal recorded 3 ns after (a). c The signal-to-laser background ratio for (a) for pixels beneath the water surface with a signal of at least 12 counts s−1. d The off-resonance (wavelength centred at 224.7 nm), laser background-subtracted signal, gated to include the laser pulse. e The lifetime of the fluorescence signal above and below the water surface. The surface and the error bars corresponding to the FWHM uncertainty in its location are shown in pink. f Absolute densities of solvated atomic O. Here, (b) has been subtracted from (a) to account for scattering from the intense gas-phase fluorescence.
