title: Communication: Broadband and ultrasensitive femtosecond time-resolved circular dichroism spectroscopy.
abstract: We report the development of broadband and sensitive time-resolved circular dichroism (TRCD) spectroscopy by exploiting optical heterodyne detection. Using this method, transient CD signals of submillidegree level can be detected over the spectral range of 415-730 nm. We also demonstrate that the broadband measurement with the aid of singular value decomposition enables the discrimination of genuine TRCD signals from artificial optical-anisotropy, such as linear birefringence and linear dichroism, induced by photoexcitation.
authors.affiliation: Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
authors.forename: Kotaro
authors.initials: K
authors.lastname: Hiramatsu
authors.affiliation: Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, Komaba, Meguro-ku, Tokyo 153-8902, Japan.
authors.forename: Takashi
authors.initials: T
authors.lastname: Nagata
mesh_terms: D002942:Circular Dichroism / Q000379:methods*; D003198:Computer Simulation; D004867:Equipment Design; D008956:Models, Chemical; D055668:Photochemical Processes; D017975:Ruthenium Compounds / Q000737:chemistry
chemical_list: D017975:Ruthenium Compounds