Characterizing ultrashort laser pulses with second harmonic dispersion scans
Ivan Sytcevich, Chen Guo, Sara Mikaelsson, Jan Vogelsang, Anne-Lise Viotti, Benjamín Alonso, Rosa Romero, Paulo T. Guerreiro, Anne L'Huillier, Helder Crespo, Mi… 展开作者
Ivan Sytcevich, Chen Guo, Sara Mikaelsson, Jan Vogelsang, Anne-Lise Viotti, Benjamín Alonso, Rosa Romero, Paulo T. Guerreiro, Anne L'Huillier, Helder Crespo, Miguel Miranda, Cord L. Arnold
The dispersion scan (d-scan) technique has emerged as a simple-to-implement characterization method for ultrashort laser pulses. D-scan traces are intuitive to interpret and retrieval algorithms that are both fast and robust have been developed to obtain the spectral phase and the temporal pulse profile. Here, we give a review of the d-scan technique based on second harmonic generation. We describe and compare recent implementations for the characterization of few- and multi-cycle pulses as well as two different approaches for recording d-scan traces in single-shot, thus showing the versatility of the technique.
Characterization of spatially inhomogeneous chirp in ultrashort multielectron beams via femtosecond hole burning
RIKEN Center for Advanced Photonics (RAP), RIKEN(理化学研究所先进光子学中心);Department of Physics, Tokyo University of Science(东京科学大学物理系);RIKEN Pioneering Research Institute (PRI), RIKEN(理化学研究所开创性研究本部)
Twisting harmonics: Transfer of orbital angular momentum in solid-state high-harmonic generation
ELI-ALPS, ELI-Hu Non-Profit Ltd.(极端光基础设施激光平台,匈牙利非营利有限公司);Theoretisch-Physikalisches Institut, Friedrich-Schiller-Universität Jena(耶拿弗里德里希·席勒大学理论物理研究所);Laboratoire Photonique Numérique et Nanosciences (LP2N), UMR 5298, CNRS-IOGS-Université Bordeaux(数字光子学与纳米科学实验室(LP2N),UMR 5298,法国国家科学研究中心-高等光学学院-波尔多大学);Centro de Investigaciones en Óptica, A.C.(光学研究中心);School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology(上海理工大学光电信息与计算机工程学院);Zhejiang Key Laboratory of 3D Micro/Nano Fabrication and Characterization, Department of Electronic and Information Engineering, School of Engineering, Westlake University(西湖大学工学院电子与信息工程系三维微纳制造与表征浙江省重点实验室);International Institute for Sustainability with Knotted Chiral Meta Matter (WPI-SKCM2), Hiroshima University(广岛大学结型手性超材料可持续国际研究所(WPI-SKCM2));Helmholtz-Institut Jena(耶拿亥姆霍兹研究所);GSI Helmholtzzentrum für Schwerionenforschung GmbH(德国重离子研究中心亥姆霍兹有限公司)
Numerical calculations of a high brilliance synchrotron source and on issues with characterizing strong radiation damping effects in non-linear Thomson/Compton backscattering experiments
大量的理论计算研究了辐射反作用力对强场反向传播电子束-激光相互作用中辐射分布的影响,但是这些影响--包括量子校正--是否能在与真实的聚束和聚焦场的相互作用中观察到,正如许多即将提出的实验所希望的那样?我们提出了数值计算的角度分辨辐射光谱的电子束团的参数类似于激光尾场加速实验中产生的,与强烈的,超短激光脉冲相互作用。对于我们的参数,辐射阻尼对\emph{photons}的角分布和能量分布的影响是不容易辨别的一个"现实的"中等发射度电子束。然而,使用这种反向传播的光束-激光器几何形状的实验应该能够通过测量\emph{electron beam}性质来测量使用当前激光系统的这种效应。此外,该源的亮度非常高,峰值光谱亮度超过$10^{29}$光子$\,$ s $^{-1}$ mm $^{-2}$ mrad $^{-2}(0.1$ %带宽$)^{-1}$,效率约为2%,峰值能量为10 MeV。
Ultrafast Pulse Retrieval from Partial FROG Traces Using Implicit Diffusion Models
University of California Los Angeles(加州大学洛杉矶分校);Stanford University(斯坦福大学);SLAC National Accelerator Laboratory, Stanford University(斯坦福大学SLAC国家加速器实验室);California NanoSystems Institute(加州纳米系统研究所)
Drill-bit-inspired dynamic focal fields for augmented laser materials processing
EMPA, Laboratory for Advanced Materials Processing(瑞士联邦材料科技与研究院,先进材料加工实验室);Institute for Applied Laser, Photonics and Surface technologies ALPS, Bern University of Applied Sciences(伯尔尼应用科学大学,应用激光、光子学与表面技术研究所ALPS);ESRF – The European Synchrotron(欧洲同步辐射装置);EMPA, Laboratory for Mechanics of Materials & Nanostructures(瑞士联邦材料科技与研究院,材料与纳米结构力学实验室)
Single-shot in situ pulse-duration measurement using plasma grating
National Key Laboratory of Plasma Physics, Laser Fusion Research Center, China Academy of Engineering Physics(中国工程物理研究院激光聚变研究中心等离子体物理国家重点实验室);University of Science and Technology of China(中国科学技术大学);Shenzhen Key Laboratory of Ultraintense Laser and Advanced Material Technology, Center for Advanced Material Diagnostic Technology, and College of Engineering Physics, Shenzhen Technology University(深圳技术大学工程物理学院先进材料诊断技术中心超强激光与先进材料技术深圳市重点实验室);LULI, Sorbonne Université, CNRS, Ecole Polytechnique, CEA(索邦大学、法国国家科学研究中心、巴黎综合理工学院、法国原子能和替代能源委员会联合激光惯性约束聚变实验室);Extreme Light Infrastructure ERIC, ELI-Beamlines Facility(极轻基础设施欧洲利益集团ELI光束线设施)