title: Observation of molecular vibrations in the time domain with incoherent laser pulses.
abstract: With the method of self-diffraction of incoherent light, molecular vibrations were observed in real time in various dye molecules pumped near the absorption edge. In Rhodamine 560, 35-fsec oscillations in the signal were measured, which corresponds to a vibrational frequency of 1000 cm(-1). Simultaneously, this technique can be used to deduce the ultrafast dephasing times in the molecular vibrational quasi-continuum. Dephasing times of 20 and 150 fsec were observed in Rhodamine 590 and Rhodamine 560, respectively.
authors.forename: Z Q
authors.initials: ZQ
authors.lastname: Huang
authors.forename: Y J
authors.initials: YJ
authors.lastname: Xie
authors.forename: G L
authors.initials: GL
authors.lastname: Huang
authors.forename: H S
authors.initials: HS
authors.lastname: Kwok