title: Raman optical activity spectroscopy by visible-excited coherent anti-Stokes Raman scattering.
abstract: We developed a Raman optical activity (ROA) spectroscopic system with visible-excited coherent anti-Stokes Raman scattering (CARS). A supercontinuum within the visible region was generated with a photonic crystal fiber pumped with both 532 and 1064 nm excitation, generating a multiplexed CARS-ROA spectrum covering the whole fingerprint region. In visible excitation, the CARS-ROA spectrum of (-)-β-pinene shows a higher contrast ratio of the chirality-induced signal to the achiral background than that of the previously reported near-infrared CARS-ROA spectrum.
authors.forename: Kotaro
authors.initials: K
authors.lastname: Hiramatsu
authors.forename: Philippe
authors.initials: P
authors.lastname: Leproux
authors.forename: Vincent
authors.initials: V
authors.lastname: Couderc
authors.forename: Takashi
authors.initials: T
authors.lastname: Nagata
authors.forename: Hideaki
authors.initials: H
authors.lastname: Kano
mesh_terms: D000081008:Bicyclic Monoterpenes; D001643:Bridged Bicyclo Compounds / Q000737:chemistry; D039821:Monoterpenes / Q000737:chemistry; D055620:Optical Phenomena; D013059:Spectrum Analysis, Raman / Q000379:methods*
chemical_list: D000081008:Bicyclic Monoterpenes; D001643:Bridged Bicyclo Compounds; D039821:Monoterpenes; C010789:beta-pinene