Abstract
The interference between the contributions of two Raman resonances to the third-order susceptibility has been observed in a liquid mixture of benzene and cyclohexane. Utilizing three variable laser frequencies, was measured in a parametric mixing experiment as a function of the intermediate frequencies and which are near different Raman resonances. Detailed Raman spectra are used to give excellent theoretical fits to the experimental curves. The usefulness of this extension of the well-known three-wave mixing, or CARS (coherent anti-Stokes Raman spectroscopy), experiment in calibrating different two-photon cross sections is discussed.
- Received 28 June 1976
DOI:https://doi.org/10.1103/PhysRevA.14.1748
©1976 American Physical Society