通过同步辐射实现极紫外和阿秒波段的相干控制。

Coherent control in the extreme ultraviolet and attosecond regime by synchrotron radiation.

作者信息

Hikosaka Y, Kaneyasu T, Fujimoto M, Iwayama H, Katoh M

机构信息

Institute of Liberal Arts and Sciences, University of Toyama, Toyama, 930-0194, Japan.

SAGA Light Source, Tosu, 841-0005, Japan.

出版信息

Nat Commun. 2019 Nov 1;10(1):4988. doi: 10.1038/s41467-019-12978-w.

DOI:10.1038/s41467-019-12978-w

PMID:31676792

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6825198/

Abstract

Quantum manipulation of populations and pathways in matter by light pulses, so-called coherent control, is currently one of the hottest research areas in optical physics and photochemistry. The forefront of coherent control research is moving rapidly into the regime of extreme ultraviolet wavelength and attosecond temporal resolution. This advance has been enabled by the development of high harmonic generation light sources driven by intense femtosecond laser pulses and by the advent of seeded free electron laser sources. Synchrotron radiation, which is usually illustrated as being of poor temporal coherence, hitherto has not been considered as a tool for coherent control. Here we show an approach based on synchrotron radiation to study coherent control in the extreme ultraviolet and attosecond regime. We demonstrate this capability by achieving wave-packet interferometry on Rydberg wave packets generated in helium atoms.

摘要

利用光脉冲对物质中的粒子数和路径进行量子操控，即所谓的相干控制，是当前光学物理和光化学领域最热门的研究领域之一。相干控制研究的前沿正迅速进入极紫外波长和阿秒时间分辨率的领域。高功率飞秒激光脉冲驱动的高次谐波产生光源的发展以及种子自由电子激光源的出现促成了这一进展。通常被认为时间相干性较差的同步辐射，迄今尚未被视为一种相干控制工具。在此，我们展示了一种基于同步辐射的方法，用于研究极紫外和阿秒领域的相干控制。我们通过对氦原子中产生的里德堡波包实现波包干涉测量，证明了这种能力。