title: Rayleigh-type nondegenerate four-wave mixing: ultrafast measurement and field correlation.
abstract: We report on an ultrafast longitudinal time measurement by a nonresonant Rayleigh-type nondegenerate four-wave mixing (NFWM). We investigated the field-correlation effects on Rayleigh-type NFWM by examining the time-delayed dependence of the NFWM spectra. Based on the field-correlation effects, a time-delayed method is proposed to suppress the thermal effect, and ultrafast relaxation time can be measured even in an absorbing medium.
authors.affiliation: Laboratory of Optical Physics, Institute of Physics & Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China.
authors.forename: Panming
authors.initials: P
authors.lastname: Fu
authors.forename: Qiang
authors.initials: Q
authors.lastname: Jiang
authors.forename: Xin
authors.initials: X
authors.lastname: Mi
authors.forename: Zuhe
authors.initials: Z
authors.lastname: Yu