Manipulating stimulated coherent anti-Stokes Raman spectroscopy signals by broad-band and narrow-band pulses

Abstract

A transition-amplitude based representation of heterodyne detected coherent anti-Stokes Raman signals is used to separate them into a parametric component that involves no change in the material and dissipative processes associated with various transitions between states. Qualitatively different contributions from the two processes are predicted for the signal generated by an overlapping narrow (picosecond) and broad-band (femtosecond) pulse. © 2009 American Institute of Physics.