Next Generation Attosecond Technology (Translation Grant)

下一代阿秒技术（翻译资助）

• 批准号: EP/F034601/1
• 负责人: John Tisch
• 金额: $ 126.96万
• 依托单位: Imperial College London
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2008
• 资助国家: 英国
• 起止时间: 2008 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FF034601%2F1
• 关键词: Next; Generation; Attosecond; Technology; Translation

Attosecond light sources have enabled scientists to observe directly the dynamics of atoms and molecules on their natural length (+ngstrom) and time (sub-femtosecond) scales. This frontier field has been called Attosecond Science, since the next smallest unit than a femtosecond is 1 attosecond (1 as) = 1/1,000,000,000,000,000,000 s. Electronic motion on this timescale underpins many microscopic natural phenomena, such as charge transfer within molecules and at surfaces. Therefore, Attosecond Science promises to have impact and application across the fields of physics, chemistry and eventually biology, as well as in nano-science and engineering. For example, scientists may soon be able to record in real-time the 3D evolution of a molecular electron during a chemical reactionWhat has unlocked this is the development of Attosecond Technology arising from the synergy of a range of technologies (including high-power femtosecond lasers, ultrafast and x-ray optics, electron imaging) and through increased understanding of the coherent interaction of atomic and molecular systems with both intense femtosecond laser pulses and synchronised pulses of short-wavelength radiation of attosecond duration often used in pump-probe configuration.The proposed research will build upon a substantial Attosecond Technological base built up in a previous Basic Technology project to develop the next generation of Attosecond Technology. The three main objectives are to construct robust sources of attosecond pulses that are broadly tunable in wavelength and thus much more versatile in their scientific applicability; to allow develop new techniques for the generation of deep ultra-violet attosecond pulses whose wavelength will permit them to couple directly to resonances in many material systems; and to explore new methods for probing attosecond dynamics in matter by interferometric measurements of the full electric field that is scattered or emitted by the sample. Successfully tackling these front-line challenges will lever a great deal of new scientific capability and is likely to have a pervasive effect on the field.

阿秒光源使科学家能够直接观察原子和分子在自然长度（+ngstrom）和时间（亚飞秒）尺度上的动力学。这个前沿领域被称为阿秒科学，因为比飞秒更小的单位是 1 阿秒 (1 as) =​​ 1/1,000,000,000,000,000,000 秒。这个时间尺度上的电子运动是许多微观自然现象的基础，例如分子内和表面的电荷转移。因此，阿秒科学有望在物理、化学、最终生物学以及纳米科学和工程领域产生影响和应用。例如，科学家可能很快就能实时记录化学反应过程中分子电子的 3D 演化。阿秒技术的发展是阿秒技术的发展，该技术源于一系列技术（包括高功率飞秒激光器、超快和 X 射线光学、电子成像）的协同作用，并通过增强对原子和分子系统与强飞秒的相干相互作用的理解 激光脉冲和阿秒持续时间的短波长辐射的同步脉冲通常用于泵浦-探针配置。拟议的研究将建立在先前基础技术项目中建立的大量阿秒技术基础上，以开发下一代阿秒技术。三个主要目标是构建强大的阿秒脉冲源，这些脉冲源的波长可广泛调谐，因此其科学适用性更加通用；允许开发产生深紫外阿秒脉冲的新技术，其波长将允许它们直接耦合到许多材料系统中的共振；并探索通过干涉测量样品散射或发射的全电场来探测物质中的阿秒动力学的新方法。成功应对这些前沿挑战将利用大量新的科学能力，并可能对该领域产生普遍影响。

项目成果

Mutual interferometric characterization of a pair of independent electric fields.

一对独立电场的相互干涉表征。

• DOI: 10.1364/ol.38.005299
• 发表时间: 2013
• 期刊: Optics letters
• 影响因子: 3.6
• 作者: Bourassin-Bouchet C

Femtosecond X-ray-induced fragmentation of fullerenes

飞秒 X 射线诱导富勒烯碎裂

• DOI: 10.1080/09500340.2015.1064175
• 发表时间: 2015
• 期刊: Journal of Modern Optics
• 影响因子: 1.3
• 作者: Berrah N

Enhancement of high harmonics generated by field steering of electrons in a two-color orthogonally polarized laser field.

• DOI: 10.1364/ol.35.003994
• 发表时间: 2010-12
• 期刊: Optics letters
• 影响因子: 3.6
• 作者: L. Brugnera;F. Frank;D. Hoffmann;R. Torres;T. Siegel;J. Underwood;E. Springate;C. Froud;E. Tu

Multiphoton Processes and Attosecond Physics

多光子过程和阿秒物理

• DOI: 10.1007/978-3-642-28948-4_59
• 发表时间: 2012
• 作者: Arrell C

Resolution of the relative phase ambiguity in spectral shearing interferometry of ultrashort pulses.

• DOI: 10.1364/ol.35.001971
• 发表时间: 2010-06
• 期刊: Optics letters
• 影响因子: 3.6
• 作者: D. Austin;T. Witting;I. Walmsley