Abstract:Attosecond transient absorption (ATA) has been developed as an all-optical technique for probing the electron dynamics in the matter. Here we present a scheme that can modify the laser-induced state and the corresponding ATA spectrum via excitation by a pair of XUV attosecond pulses and probe by a time-delayed mid-infrared (MIR) laser. Different from the scheme of the electronic excitation by a single XUV attosecond pulse, the application of a pair of XUV pulses provides with extra degrees of freedom, such as … Show more
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