title: Laser-induced fluorescence detection of hydroxyl (OH) radical by femtosecond excitation.
abstract: The development of a laser-induced fluorescence detection scheme for probing combustion-relevant species using a high-repetition-rate ultrafast laser is described. A femtosecond laser system with a 1 kHz repetition rate is used to induce fluorescence, following two-photon excitation (TPE), from hydroxyl (OH) radicals that are present in premixed laminar flames. The experimental TPE and one-photon fluorescence spectra resulting from broadband excitation into the (0,0) band of the OH A(2)∑(+)-X(2)Π system are compared to simulated spectra. Additionally, the effects of non-transform-limited femtosecond pulses on TPE efficiency is investigated.
authors: Spectral Energies, LLC, 5100 Springfield Street, Suite 301, Dayton, Ohio 45431, USA.
authors: Hans U
authors: HU
authors: Stauffer
authors: Waruna D
authors: WD
authors: Kulatilaka
authors: James R
authors: JR
authors: Gord
authors: Sukesh
authors: S
authors: Roy