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For the future progress of nonlinear attosecond science, one of the most important issues is the development of high-energy isolated attosecond pulse sources. In this paper, we review our research on the energy-scaling method for isolated attosecond pulse generation, which combines infrared two-color gating and an energy-scaling method of high-order harmonic generation. By establishing the robust...
We successfully generated a microjoule isolated attosecond pulse (IAP) for investigating attosecond nonlinear phenomena in atoms and molecules. Pulse duration of IAP was directly evaluated to be 500 as by autocorrelation method using the Coulomb explosion of N2.
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