title: Interference-free coherence dynamics of gas-phase molecules using spectral focusing.
abstract: Spectral focusing using broadband femtosecond pulses to achieve highly selective measurements has been employed for numerous applications in spectroscopy and microspectroscopy. In this work we highlight the use of spectral focusing for selective excitation and detection of gas-phase species. Furthermore, we demonstrate that spectral focusing, coupled with time-resolved measurements based upon probe delay, allows the observation of interference-free coherence dynamics of multiple molecules and gas-phase temperature making this technique ideal for gas-phase measurements of reacting flows and combustion processes.
authors.affiliation: National Research Council, 500 Fifth St., Washington, DC 20001, USA.
authors.forename: Paul J
authors.initials: PJ
authors.lastname: Wrzesinski
authors.forename: Sukesh
authors.initials: S
authors.lastname: Roy
authors.forename: James R
authors.initials: JR
authors.lastname: Gord
mesh_terms: D000465:Algorithms; D003198:Computer Simulation; D005740:Gases / Q000032:analysis* / Q000737:chemistry*; D008956:Models, Chemical; D013057:Spectrum Analysis / Q000379:methods*
chemical_list: D005740:Gases