Femtosecond stimulated Raman dual-comb spectroscopy

Nonlinear dual-frequency-comb spectroscopy is demonstrated with multi-heterodyne femtosecond Raman-induced Kerr-effect spectroscopy. Spectra of liquid samples are recorded with a spectral resolution of 200 GHz, a measurement time of 350 μs and a sensitivity of 10
^-6
.