title: Heterodyne coherent anti-Stokes Raman scattering for spectral phase retrieval and signal amplification.
abstract: We study interference between a local oscillator and coherent anti-Stokes Raman scattering signal fields by controlling their relative phase and amplitude. This control allows direct observation of the real and imaginary components of the third-order nonlinear susceptibility (chi((3))) of the sample. In addition, we demonstrate that the heterodyne method can be used to amplify the signal.
authors.affiliation: Institute for Quantum Studies and Department of Physics, Texas A&M University, College Station, Texas 77843, USA. xwang@physics.tamu.edu
authors.forename: Xi
authors.initials: X
authors.lastname: Wang
authors.forename: Aihua
authors.initials: A
authors.lastname: Zhang
authors.forename: Miaochan
authors.initials: M
authors.lastname: Zhi
authors.forename: Alexei V
authors.initials: AV
authors.lastname: Sokolov
authors.forename: George R
authors.initials: GR
authors.lastname: Welch
authors.forename: Marlan O
authors.initials: MO
authors.lastname: Scully