title: Arbitrary-detuning asynchronous optical sampling pump-probe spectroscopy of bacterial reaction centers.
abstract: A recently reported variant of asynchronous optical sampling compatible with arbitrary unstabilized laser repetition rates is applied to pump-probe spectroscopy. This makes possible the use of a 5.1 MHz chirped pulse oscillator as the pump laser, thus extending the available time window to almost 200 ns with a time resolution as good as about 320 fs. The method is illustrated with the measurement in a single experiment of the complete charge transfer dynamics of the reaction center from Rhodobacter sphaeroides.
authors.affiliation: Laboratoire d’Optique et Biosciences, Ecole Polytechnique, Centre National de la Recherche Scientifique, 91128 Palaiseau, France.
authors.forename: Laura
authors.initials: L
authors.lastname: Antonucci
authors.forename: Adeline
authors.initials: A
authors.lastname: Bonvalet
authors.forename: Xavier
authors.initials: X
authors.lastname: Solinas
authors.forename: Michael R
authors.initials: MR
authors.lastname: Jones
authors.forename: Marten H
authors.initials: MH
authors.lastname: Vos
authors.forename: Manuel
authors.initials: M
authors.lastname: Joffre
mesh_terms: D004579:Electron Transport; D055096:Optical Devices; D045322:Photosynthetic Reaction Center Complex Proteins / Q000378:metabolism*; D012242:Rhodobacter sphaeroides / Q000378:metabolism*; D013057:Spectrum Analysis
chemical_list: D045322:Photosynthetic Reaction Center Complex Proteins