E. Gershgoren, R. Bartels, J. Fourkas, R. Tobey, M. Murnane, H. Kapteyn
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Simplified setup for high-resolution spectroscopy using ultrashort pulses
Using a broadband femtosecond laser and simple optics, we demonstrate narrow-bandwidth tunable selective vibrational excitation in liquids. The resolution obtained is 80 times higher than the laser bandwidth-the highest obtained from a femtosecond laser to date.