Mashiko Hiroki, Yamaguchi Tomohiko, Oguri Katsuya, Suda Akira, Gotoh Hideki
NTT Basic Research Laboratories, 3-1 Morinosato Wakamiya, Atsugi, Kanagawa 243-0198, Japan.
1] NTT Basic Research Laboratories, 3-1 Morinosato Wakamiya, Atsugi, Kanagawa 243-0198, Japan [2] Tokyo University of Science, 2641 Yamazaki, Noda-shi, Chiba-ken 278-8510, Japan.
Nat Commun. 2014 Dec 16;5:5599. doi: 10.1038/ncomms6599.
In many atomic, molecular and solid systems, Lorentzian and Fano profiles are commonly observed in a broad research fields throughout a variety of spectroscopies. As the profile structure is related to the phase of the time-dependent dipole moment, it plays an important role in the study of quantum properties. Here we determine the dipole phase in the inner-shell transition using spectral phase interferometry for direct electric-field reconstruction (SPIDER) with isolated attosecond pulses (IAPs). In addition, we propose a scheme for pulse generation and compression by manipulating the inner-shell transition. The electromagnetic radiation generated by the transition is temporally compressed to a few femtoseconds in the extreme ultraviolet (XUV) region. The proposed pulse-compression scheme may provide an alternative route to producing attosecond pulses of light.
在许多原子、分子和固体系统中，在广泛的研究领域里，通过各种光谱学方法普遍观察到洛伦兹分布和法诺分布。由于分布结构与随时间变化的偶极矩的相位有关，它在量子特性研究中起着重要作用。在这里，我们使用具有孤立阿秒脉冲（IAP）的用于直接电场重建的光谱相位干涉术（SPIDER）来确定内壳层跃迁中的偶极相位。此外，我们提出了一种通过操纵内壳层跃迁来产生和压缩脉冲的方案。由跃迁产生的电磁辐射在极紫外（XUV）区域被时间压缩到几个飞秒。所提出的脉冲压缩方案可能为产生阿秒光脉冲提供一条替代途径。
