Four Wave Mixing Spectroscopy at the Interface Between the Time and Frequency Domains
arXiv:0907.3625 · doi:10.1016/j.optcom.2009.12.078
Abstract
Combined spectrally and time resolved measurements provide information not otherwise available if performed in either domain alone. We demonstrate a new approach to Four Wave Mixing spectroscopy, where spectral selectivity is achieved by phase matching filtering without a spectrometer, and the time resolved signal is obtained within a single pulse and without mechanically scanning any delays. We analyze the Degenerate Four Wave Mixing signal, and show that a counter-rotating Feynman diagram not previously considered is necessary in order to understand the measured frequency and time resolved spectrograms.
24 page article with 4 figures