title: Nonresonant background suppression in coherent anti-Stokes Raman spectroscopy through cascaded nonlinear optical interactions.
abstract: We propose and experimentally validate a technique for four-wave mixing background suppression in coherent anti-Stokes Raman spectroscopy. It is based on the interaction of the signals generated from the Kerr third-order nonlinearity and the cascaded quadratic process in a nonlinear crystal. Theoretical analysis agrees well with the experimental results, which provide a quantitative assessment of different contributions and allow extraction of the nonlinearity parameters.
authors: Department of Biomedical Engineering, Texas A&M University, College Station, Texas 77843-3120, USA.
authors: Georgi I
authors: GI
authors: Petrov
authors: Miaochan
authors: M
authors: Zhi
authors: Dawei
authors: D
authors: Wang
authors: Vladislav V
authors: VV
authors: Yakovlev
mesh_terms: D017711:Nonlinear Dynamics; D055620:Optical Phenomena; D013059:Spectrum Analysis, Raman / Q000379:methods*