Schwarz, HeinerHeinerSchwarzSchlögl, RobertRobertSchlöglHorn, RaimundRaimundHorn2024-02-272024-02-272012-10-01Applied Physics B: Lasers and Optics 109 (1): 19-26 (2012)https://hdl.handle.net/11420/46030A new experimental method is described enabling detection of hydroxyl radicals (OH) by laserinduced fluorescence in high-temperature gas-phase reactions. This is accomplished by means of a bidirectional optical fiber probe, which is of interest for applications where optical access is limited. An optical setup that allows simultaneous excitation and detection of fluorescence using one and the same fiber has been developed. Complications resulting from coupling as well as laser-induced scattering are addressed, and different fibers are compared with regard to core material composition and geometric collection efficiency. On this basis, a suitable fiber is identified, and OH detection and profile measurements are demonstrated in a premixed laminar flame as reference experiment. © Springer-Verlag 2012.en1432-0649201211926SpringerChemistryJournal Article10.1007/s00340-012-5172-9Journal Article