We report laser-induced fluorescence recording and identification of the R and P branches (J = 1−21) of the (0, 0) Schumann–Runge band of molecular oxygen, excited near 202 nm by a tunable pulsed laser beam (3-MW/cm2 maximum intensity). The intensity of the excitation spectrum varies linearly with the density of the laser power. In the conditions of the experiment, the detection limit of ground-state O2 molecules deduced from the R5 line is ~1015 cm−3.
© 1994 Optical Society of America
Original Manuscript: June 22, 1994
Published: December 1, 1994
P. Pezé, B. Dubreuil, and J. Siffre, "Laser-induced fluorescence spectroscopy of the (0, 0) Schumann–Runge band of O2," Opt. Lett. 19, 2021-2023 (1994)