Attosecond nonlinear optics using gigawatt-scale isolated attosecond pulses

Eiji J. Takahashi (), Pengfei Lan, Oliver D. Mücke, Yasuo Nabekawa and Katsumi Midorikawa
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Eiji J. Takahashi: Extreme Photonics Research Group, RIKEN Center for Advanced Photonics
Pengfei Lan: Extreme Photonics Research Group, RIKEN Center for Advanced Photonics
Oliver D. Mücke: Center for Free-Electron Laser Science, Deutsches Elektronen-Synchrotron DESY
Yasuo Nabekawa: Extreme Photonics Research Group, RIKEN Center for Advanced Photonics
Katsumi Midorikawa: Extreme Photonics Research Group, RIKEN Center for Advanced Photonics

Nature Communications, 2013, vol. 4, issue 1, 1-9

Abstract: Abstract 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.

Date: 2013
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DOI: 10.1038/ncomms3691

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