Optimization of temporal gate by two-color chirped lasers for the generation of isolated attosecond pulse in soft X rays | |
He, Liwei2; Yuan, Guanglu2; Wang, Kan2; Hua, Weijie2; Yu, Chao2; Jin, Cheng1,2 | |
刊名 | PHOTONICS RESEARCH |
2019-12-01 | |
卷号 | 7期号:12页码:1407-1415 |
关键词 | WATER-WINDOW HIGH HARMONICS WAVE-FORMS FIELD DRIVEN |
ISSN号 | 2327-9125 |
DOI | 10.1364/PRJ.7.001407 |
产权排序 | 2 |
英文摘要 | We propose a simple and efficient method to optimize two-color chirped laser pulses by forming a "temporal gate" for the generation of isolated attosecond pulses (IAPs) in soft X rays. We show that the generation process for higher and cutoff harmonics can be effectively limited within the temporal gate, and the harmonic emission interval can be further reduced with the help of phase-matching by only selecting the contribution from short-trajectory electrons. This two-color gating mechanism is verified by increasing the pulse duration, raising the gas pressure, and extending the target cutoff. Compared to the five-color waveform in Phys. Rev. Lett. 102, 063003 (2009), our waveform can be used to generate the IAP in the long-duration laser pulse while the cutoff energy is higher without the reduction of harmonic yields. Our work provides an alternative temporal gating scheme for the generation of IAPs by simultaneously improving the harmonic conversion efficiency, thus making the attosecond soft X rays an intense and highly time-resolved tabletop light source for future applications. (C) 2019 Chinese Laser Press |
语种 | 英语 |
出版者 | OPTICAL SOC AMER |
WOS记录号 | WOS:000500910500008 |
内容类型 | 期刊论文 |
源URL | [http://ir.opt.ac.cn/handle/181661/32074] |
专题 | 西安光学精密机械研究所_瞬态光学技术国家重点实验室 |
通讯作者 | Jin, Cheng |
作者单位 | 1.Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Xian 710119, Shaanxi, Peoples R China 2.Nanjing Univ Sci & Technol, Dept Appl Phys, Nanjing 210094, Jiangsu, Peoples R China |
推荐引用方式 GB/T 7714 | He, Liwei,Yuan, Guanglu,Wang, Kan,et al. Optimization of temporal gate by two-color chirped lasers for the generation of isolated attosecond pulse in soft X rays[J]. PHOTONICS RESEARCH,2019,7(12):1407-1415. |
APA | He, Liwei,Yuan, Guanglu,Wang, Kan,Hua, Weijie,Yu, Chao,&Jin, Cheng.(2019).Optimization of temporal gate by two-color chirped lasers for the generation of isolated attosecond pulse in soft X rays.PHOTONICS RESEARCH,7(12),1407-1415. |
MLA | He, Liwei,et al."Optimization of temporal gate by two-color chirped lasers for the generation of isolated attosecond pulse in soft X rays".PHOTONICS RESEARCH 7.12(2019):1407-1415. |
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