Fully stabilized multi-TW optical waveform synthesizer: Toward gigawatt isolated attosecond pulses

被引：59

作者：

Xue, Bing ^{[1
]}

Tamaru, Yuuki ^{[1
,2
]}

Fu, Yuxi ^{[1
]}

Yuan, Hua ^{[3
,4
]}

Lan, Pengfei ^{[3
,4
]}

Muecke, Oliver D. ^{[5
]}

Suda, Akira ^{[2
]}

Midorikawa, Katsumi ^{[1
]}

Takahashi, Eiji J. ^{[1
]}

机构：

[1] RIKEN, RIKEN Ctr Adv Photon, Attosecond Sci Res Team, 2-1 Hirosawa, Wako, Saitama 3510198, Japan

[2] Tokyo Univ Sci, Dept Phys, 2641 Yamazaki, Noda, Chiba 2788510, Japan

[3] Huazhong Univ Sci & Technol, Sch Phys, Wuhan 430074, Hubei, Peoples R China

[4] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Hubei, Peoples R China

[5] DESY, Ctr Free Electron Laser Sci CFEL, Notkestr 85, D-22607 Hamburg, Germany

来源：

SCIENCE ADVANCES | 2020年 / 6卷 / 16期

基金：

中国国家自然科学基金;

关键词：

HIGH-HARMONIC-GENERATION; LASER; BEAMS;

D O I：

10.1126/sciadv.aay2802

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

A stable 50-mJ three-channel optical waveform synthesizer is demonstrated and used to reproducibly generate a high-order harmonic supercontinuum in the soft x-ray region. This synthesizer is composed of pump pulses from a 10-Hz repetition-rate Ti:sapphire pump laser and signal and idler pulses from an infrared two-stage optical parametric amplifier driven by this pump laser. With full active stabilization of all relative time delays, relative phases, and the carrier-envelope phase, a shot-to-shot stable intense continuum harmonic spectrum is obtained around 60 eV with pulse energy above 0.24 mu J. The peak power of the soft x-ray continuum is evaluated to be beyond 1 GW with a 170-as transform limit duration. We found a characteristic delay dependence of the multicycle waveform synthesizer and established its control scheme. Compared with the one-color case, we experimentally observe an enhancement of the cutoff spectrum intensity by one to two orders of magnitude using three-color waveform synthesis.

引用

页数：10

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