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Coherent control of an electric dipole in air plasma created by femtosecond laser pulses

Air plasma excited by a 800 nm femtosecond pulse with its second harmonic is capable of emitting intense Terahertz (THz) radiation, which is of great interest due to its unique potential for stand-off THz applications [1, 2]. In this paper, we report the experimental observation of an electric dipole moment in such a plasma and its coherent control.