Four Wave Mixing Spectroscopy at the Interface Between the Time and Frequency Domains

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Paskover, Yuri
Shalit, Andrey
Prior, Yehiam
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Abstract
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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.
Comment: 24 page article with 4 figures
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Physics - Optics
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