Heterodyne coherent anti-Stokes Raman scattering for spectral phase retrieval and signal amplification.
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.
Wang
Xi
X
Institute for Quantum Studies and Department of Physics, Texas A&M University, College Station, Texas 77843, USA. xwang@physics.tamu.edu
Zhang
Aihua
A
Zhi
Miaochan
M
Sokolov
Alexei V
AV
Welch
George R
GR
Scully
Marlan O
MO