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Synchronizing high-harmonics and terahertz-wave spectroscopy (HATS) has been demonstrated as an efficient approach in revealing the information of molecular structure and the underlying electron dynamics. We further investigate the alignment dependent HATS from carbon dioxide at different dual-color relative phases (DRP). We find that the alignment dependence of terahertz generation dose not vary...
We perform a joint measurement of terahertz waves, high-harmonics and the second harmonic interference generated by ionizing atomic Argon gas in a thin jet moving along the Releigh range of a phase-locked two-color laser field. The measurements show that the optimal phases for terahertz radiation and even-order harmonics change simultaneously along the focal length but the the relative phase between...
We perform a joint measurement of terahertz waves and high-order harmonics generated from Argon atoms driven by a fundamental laser pulse and its second harmonic. By correlating their dependence on the phase-delay of the two pulses, we determine the generation of THz waves in tens of attoseconds precision. Compared with simulations and models, we find that the laser-assisted soft-collision of the...
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