title: Attenuated total reflectance spectroscopy with chirped-pulse upconversion.
abstract: Chirped-pulse upconversion technique has been applied to attenuated total reflectance (ATR) infrared spectroscopy. An extremely broadband infrared pulse was sent to an ATR diamond prism and the reflected pulse was converted to the visible by using four-wave mixing in krypton gas. Absorption spectra of liquids in the range from 200 to 5500 cm(-1) were measured with a visible spectrometer on a single-shot basis. The system was applied to observe the dynamics of exchanging process of two solvents, water and acetone, which give clear vibrational spectral contrast. We observed that the exchange was finished within ∼ 10 ms.
authors.forename: Hideto
authors.initials: H
authors.lastname: Shirai
authors.forename: Constance
authors.initials: C
authors.lastname: Duchesne
authors.forename: Yuji
authors.initials: Y
authors.lastname: Furutani
authors.forename: Takao
authors.initials: T
authors.lastname: Fuji
mesh_terms: D000096:Acetone / Q000737:chemistry; D008027:Light; D012996:Solutions; D017550:Spectroscopy, Fourier Transform Infrared; D014867:Water / Q000737:chemistry
chemical_list: D012996:Solutions; D014867:Water; D000096:Acetone