| Budget Amount *help |
¥174,720,000 (Direct Cost: ¥134,400,000、Indirect Cost: ¥40,320,000)
Fiscal Year 2018: ¥27,300,000 (Direct Cost: ¥21,000,000、Indirect Cost: ¥6,300,000)
Fiscal Year 2017: ¥33,670,000 (Direct Cost: ¥25,900,000、Indirect Cost: ¥7,770,000)
Fiscal Year 2016: ¥47,320,000 (Direct Cost: ¥36,400,000、Indirect Cost: ¥10,920,000)
Fiscal Year 2015: ¥34,580,000 (Direct Cost: ¥26,600,000、Indirect Cost: ¥7,980,000)
Fiscal Year 2014: ¥31,850,000 (Direct Cost: ¥24,500,000、Indirect Cost: ¥7,350,000)
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| Outline of Final Research Achievements |
We have developed high-energy three-color optical waveform synthesizer consisting of the 800 nm main, 1300 nm signal and 1900 idler pulses by upgrading our original 2-color excitation method. By focusing the three color pulses into Ar gas cell. an isolated attosecond pulses energy of 240 nJ with a pulse duration of 140as at a central wavelength of 60eV was achieved. The attained peak power of 1.7 GW was intense enough to implement attosecond pump - attosecond probe experiments. In addition, we have demonstrated two-color simultaneous operation of 3 MHz high harmonics with a high-pulse-energy Yb:YAG thin disk ring-type oscillator. The harmonic order in each port can be independently controlled by choosing an appropriate gas for each port. Our method paves the way to MHz repetition-rated high-power XUV sources for multi-user or multi-color experiments.
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