title: Gas-phase thermometry using delayed-probe-pulse picosecond coherent anti-Stokes Raman scattering spectra of H2.
abstract: We report the development and application of a simple theoretical model for extracting temperatures from picosecond-laser-based coherent anti-Stokes Raman scattering (CARS) spectra of H2 obtained using time-delayed probe pulses. This approach addresses the challenges associated with the effects of rotational-level-dependent decay lifetimes on time-delayed probing for CARS thermometry. A simple procedure is presented for accurate temperature determination based on a Boltzmann distribution using delayed-probe-pulse vibrational CARS spectra of H2; this procedure requires measurement at only a select handful of probe-pulse delays and requires no assumptions about sample environment.
authors.affiliation: Spectral Energies, LLC, Dayton, Ohio 45431, USA.
authors.forename: Hans U
authors.initials: HU
authors.lastname: Stauffer
authors.forename: Waruna D
authors.initials: WD
authors.lastname: Kulatilaka
authors.forename: Paul S
authors.initials: PS
authors.lastname: Hsu
authors.forename: James R
authors.initials: JR
authors.lastname: Gord
authors.forename: Sukesh
authors.initials: S
authors.lastname: Roy