title: Femtosecond pulse shaping adds a new dimension to mass spectrometry.
abstract: Phase-shaped femtosecond laser pulses and mass spectrometry were implemented as a tool for improving molecular identification. We demonstrate that the specific lines in the mass spectra of several chemical warfare simulants are sensitive to the phase characteristics of the incident laser field. The deviation in the relative yield of fragment ions observed upon pulse shaping (enhancement or suppression) adds a new dimension to mass spectrometry that improves molecular identification and can be used to quantitatively analyze mixtures of isomers.
authors.affiliation: Biophotonic Solutions, Inc., Okemos, Michigan 48864, USA. pastirk@biophotonicsolutions.com
authors.forename: Igor
authors.initials: I
authors.lastname: Pastirk
authors.forename: Xin
authors.initials: X
authors.lastname: Zhu
authors.forename: Vadim V
authors.initials: VV
authors.lastname: Lozovoy
authors.forename: Marcos
authors.initials: M
authors.lastname: Dantus
mesh_terms: D000098:Acetophenones / Q000032:analysis; D007477:Ions; D007834:Lasers; D013058:Mass Spectrometry / Q000295:instrumentation* / Q000379:methods*; D008956:Models, Chemical; D055095:Optics and Photonics; D063065:Organophosphonates / Q000032:analysis; D009991:Oscillometry; D010626:Phenylethyl Alcohol / Q000032:analysis; D017905:Phosphites / Q000032:analysis; D013997:Time Factors
chemical_list: D000098:Acetophenones; D007477:Ions; D063065:Organophosphonates; D017905:Phosphites; D010626:Phenylethyl Alcohol; C038699:acetophenone; C047356:dimethyl hydrogen phosphite