Tomonori Nomoto

  • Citations Per Year
Learn More
We observed the fourth-order and third-order optical responses in the time domain on a TiO(2) (110) surface covered with trimethyl acetates. Coherent vibrations assignable to near-surface phonon modes were present at 179, 191, 359, 440, 507, 609, and 823 cm(-1) in the fourth-order responses. The amplitude and phase of each mode were determined with(More)
Low frequency vibrational spectra of submonolayer N3 dye (Ru(4,4(')-dicarboxy-2,2(')-bipyridine)2(NCS)2) adsorbed on TiO2 (110) were reported by using fourth-order coherent Raman spectroscopy, which is interface-sensitive vibrational spectroscopy. Most of the peaks observed in the experiment were at the same frequency as that of Raman and infrared spectra(More)
Excited-state structure and dynamics of 1,3,5-tris(phenylethynyl)benzene (TPB) have been studied in n-hexane and n-heptane solutions. Time-resolved fluorescence spectra, fluorescence anisotropy, and lifetime of TPB were recorded with femtosecond to nanosecond time resolution. Raman depolarization ratio was also measured to elucidate a nonplanar structure of(More)
A Raman-based, nonlinear optical spectroscopy is a promising method for observing vibrational modes localized at buried interfaces. The principles of Raman excitation and interface-selective detection of coherent vibrations are described. Applications to air-liquid, liquid-liquid, air-solid, liquid-solid, and solid-solid interfaces are reviewed.
The fourth-order coherent Raman response of a TiO2 (110) surface covered by HCl aqueous solution, neat octanol, acetic acid, or carbon tetrachloride layers is acquired. Four fourth-order optical responses were identified at 837-826, 452-448, 371-362, and 184-183 cm(-1) and assigned to near-surface phonons of TiO2. A third-order response produced in the bulk(More)
  • 1