Open AccessInterference-free coherence dynamics of gas-phase molecules using spectral focusing
Author(s) -
Paul J. Wrzesinski,
Sukesh Roy,
James R. Gord
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.023390
Subject(s) - coherence (philosophical gambling strategy) , optics , femtosecond , interference (communication) , materials science , spectroscopy , broadband , phase conjugation , phase (matter) , physics , laser , channel (broadcasting) , quantum mechanics , electrical engineering , engineering
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.