[19a-B301-1~11] 3.6 Ultrashort-pulse and high-intensity lasers

▲ [19a-B301-9] Generation of high-flux 50-attosecond ‘water window’ X-ray by a high-energy infrared two-color waveform synthesizer

〇Yuxi FU¹, H. Yuan², Pengfei Lan², Katsumi Midorikawa¹, Eiji J. Takahashi¹ (1.RIKEN, 2.HUST)

Keywords:attosecond, waveform synthesizer, high harmonic generation

By employing a high-energy infrared two-color waveform synthesizer, we theoretically investigated generation of a high-flux isolated attosecond pulse (IAP) in the 'water window' region through high-order harmonic generation. Because of the reduced atto-chirp using longer wavlength driving laser, we could obtain 50 as pulse even without chirp compensation. Moreover, by employing a loose focusing geometry for energy scaling of IAP, we expect to obtain several orders higher flux IAP compared with reported works in the 'water window' region.