We utilized femtosecond time-resolved coherent anti-Stokes Raman spectroscopy (CARS) to study the ultrafast vibrational dynamics in distilled water at room temperature. The CARS signals from the broad OH-stretching modes between 3100 cm(-1) and 3700 cm(-1) were obtained and analyzed. The dephasing times of four Raman modes in water were detected and compared. (C) 2014 Elsevier B.V. All rights reserved.