Attosecond nonlinear optics using gigawatt-scale isolated attosecond pulses

被引：0
作者：
Eiji J. Takahashi
Pengfei Lan
Oliver D. Mücke
Yasuo Nabekawa
Katsumi Midorikawa
机构：
[1] Extreme Photonics Research Group,Ultrafast Optics and X
[2] RIKEN Center for Advanced Photonics,Rays Division
[3] Center for Free-Electron Laser Science,undefined
[4] Deutsches Elektronen-Synchrotron DESY,undefined
[5] The Hamburg Center for Ultrafast Imaging,undefined
[6] Luruper Chaussee 149,undefined
[7] Present address: School of Physics,undefined
[8] Huazhong University of Science and Technology,undefined
[9] Wuhan 430074,undefined
[10] China,undefined
来源：
Nature Communications | / 4卷
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摘要：
High-energy isolated attosecond pulses required for the most intriguing nonlinear attosecond experiments as well as for attosecond-pump/attosecond-probe spectroscopy are still lacking at present. Here we propose and demonstrate a robust generation method of intense isolated attosecond pulses, which enable us to perform a nonlinear attosecond optics experiment. By combining a two-colour field synthesis and an energy-scaling method of high-order harmonic generation, the maximum pulse energy of the isolated attosecond pulse reaches as high as 1.3 μJ. The generated pulse with a duration of 500 as, as characterized by a nonlinear autocorrelation measurement, is the shortest and highest-energy pulse ever with the ability to induce nonlinear phenomena. The peak power of our tabletop light source reaches 2.6 GW, which even surpasses that of an extreme-ultraviolet free-electron laser.
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