Novel quasi phase matching of high harmonic generation via advanced dual gas multi jet targets

通过先进的双气体多射流靶产生高次谐波的新型准相位匹配

• 批准号: EP/J002976/1
• 负责人: Brendan Hugh Dromey
• 金额: $ 21.39万
• 依托单位: Queen's University Belfast
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2012
• 资助国家: 英国
• 起止时间: 2012 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FJ002976%2F1
• 关键词: Novel; quasi; phase; matching; harmonic

Ultrafast/attosecond physics is an exciting and dynamic research discipline, revealing atomic and molecular structures/processes with unprecedented spatial and temporal resolution. A significant limitation, however, has been the limited amount of laser energy that can be converted into XUV and soft x-ray regions of the spectrum. This is primarily due to phase mismatch between the driving laser and generated harmonic field, induced by the large free-electron contribution to the refractive index. Quasi-phasematching has been a front runner in the drive towards this objective but to date has been largely confined to low average power 'proof-of-principle' experiments in hollow core capillaries. This proposal seeks to develop a ground breaking new approach to quasi-phasematching developed by our group at QUB - dual gas multi-jet arrays in a capillary free geometry - to an exceptionally high standard.In this proposal we intend to build upon experimental observations already made which verify this exciting new technique. Together with our collaborators at the HASYLAB (DESY, Hamburg) and TEI Rethymno (Crete) the current design will be extended to generate a high average power harmonic source suitable for seeding the FLASH free electron laser at DESY. In a second strand of this proposal we will use the unique ability of this source to fine-control the phase of HHG emission for intense single attosecond pulse generation. This proposal will form the core of an international collaboration aimed at delivering the first high average power HHG source and intense attosecond pulses, and work will be performed on lasers at QUB, DESY and TEI Crete.

Ultrafast/Attosecond Physics是一门令人兴奋的动态研究学科，揭示了具有前所未有的空间和时间分辨率的原子和分子结构/过程。然而，一个重要的限制是可以将激光能量转换为频谱的XUV和软X射线区域的有限量。这主要是由于驱动激光器和产生的谐波场之间的相位不匹配，这是由于对折射率的大型自由电子贡献引起的。准匹配是朝向这一目标的前进者，但迄今为止，迄今为止一直局限于空心核心毛细血管中的低平均功率“原理证明”实验。该提案旨在开发一种新的方法，以通过Qub -Qub -Dual Gas Multi -jet阵列在毛细管的无毛细管几何形状中开发的准调整方法，以达到一个非常高的标准。在本提案中，我们打算以实验性观察为基础，从而验证这一令人兴奋的新技术。与我们在Hasylab（Desy，Hamburg）和Tei Rethymno（Crete）（Crete）的合作者一起，将扩展当前的设计，以生成高平均功率谐波源，适合在DESY播种flash Frame Electron Laser。在该提案的第二条中，我们将使用该源的独特能力来对照HHG发射相，以实现强烈的单脉冲产生。该提案将构成国际合作的核心，旨在提供第一个高平均功率HHG源和强烈的Attsond脉冲，并且将在QUB，DESY和TEI Crete的激光器上进行工作。

项目成果

Picosecond metrology of laser-driven proton bursts.

• DOI: 10.1038/ncomms10642
• 发表时间: 2016-02-10
• 期刊: Nature communications
• 影响因子: 16.6
• 作者: Dromey B;Coughlan M;Senje L;Taylor M;Kuschel S;Villagomez-Bernabe B;Stefanuik R;Nersisyan G;Stella L;Kohanoff J;Borghesi M;Currell F;Riley D;Jung D;Wahlström CG;Lewis CL;Zepf M
• 通讯作者: Zepf M

Diagnostics for studies of novel laser ion acceleration mechanisms.

用于研究新型激光离子加速机制的诊断。

• DOI: 10.1063/1.4900626
• 发表时间: 2014
• 期刊: The Review of scientific instruments
• 作者: Senje L

New design of a multi-jet target for quasi phase matching.

用于准相位匹配的多射流靶的新设计。

• DOI: 10.1063/1.4897269
• 发表时间: 2014
• 期刊: The Review of scientific instruments
• 作者: Hage A

Scaling of ion energies in the relativistic-induced transparency regime

• DOI: 10.1017/s0263034615000828
• 发表时间: 2015
• 期刊: Laser and Particle Beams
• 影响因子: 0.9
• 作者: D. Jung;B. Albright;L. Yin;D. Gautier;B. Dromey;R. Shah;S. Palaniyappan;S. Letzring;H. C. Wu;T. Shimada;Randall P. Johnson;D. Habs;M. Roth;J. Fernández;B. Hegelich

Noncollinear Polarization Gating of Attosecond Pulse Trains in the Relativistic Regime.

• DOI: 10.1103/physrevlett.115.193903
• 发表时间: 2015-11
• 期刊: Physical review letters
• 影响因子: 8.6
• 作者: M. Yeung;J. Bierbach;J. Bierbach;E. Eckner;E. Eckner;Sergey Rykovanov;S. Kuschel;S. Kuschel