Intrinsic cascading contributions to the fifth- and seventh-order electronically off- resonant Raman spectroscopies
نویسندگان
چکیده
The cascading polarization contributing to the femtosecond fifth-and seventh-order coherent Raman scattering processes is obtained in terms of the third-and fifth-order Raman response functions. It is found that four cascading processes contribute to the fifth-order Raman scattering signal. In the case of the seventh-order Raman scattering, there are 34 possible cascading processes contributing to the seventh-order Raman scattering signal, and they are classified as (5) ϫ (3)-and (3) ϫ (3) ϫ (3)-types depending on the involved low-order nonlinear optical processes. Due to the complicated interference among these polarization fields, it may not be possible to experimentally measure the pure seventh-order Raman scattering signal without contamination from the cascaded contributions.
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