Non-linear self-driven spectral tuning of Extreme Ultraviolet Femtosecond Pulses in monoatomic materials
Carino Ferrante, Emiliano Principi, Andrea Marini, Giovanni Batignani, Giuseppe Fumero, Alessandra Virga, Laura Foglia, Riccardo Mincigrucci, Alberto Simoncig, … 展开作者
Carino Ferrante, Emiliano Principi, Andrea Marini, Giovanni Batignani, Giuseppe Fumero, Alessandra Virga, Laura Foglia, Riccardo Mincigrucci, Alberto Simoncig, Carlo Spezzani, Claudio Masciovecchio, Tullio Scopigno
Self-action nonlinearity is a key aspect -- either as a foundational element or a detrimental factor -- of several optical spectroscopies and photonic devices. Supercontinuum generation, wavelength converters and chirped pulse amplification are just a few examples. The recent advent of Free Electron Lasers (FEL) fostered building on nonlinearity to propose new concepts and extend optical wavelengths paradigms for extreme ultraviolet (EUV) and X-ray regimes. No evidence for intrapulse dynamics, however, has been reported at such short wavelengths, where the light-matter interactions are ruled by the sharp absorption edges of core-electrons. Here, we provide experimental evidence for self-phase modulation of femtosecond FEL pulses, which we exploit for fine self-driven spectral tunability by interaction with sub-micrometric foils of selected monoatomic materials. Moving the pulse wavelength across the absorption edge, the spectral profile changes from a non-linear spectral blue-shift to a red-shifted broadening. These findings are rationalized accounting for ultrafast ionization and delayed thermal response of highly excited electrons above and below threshold, respectively.
Mie-lithography: void-resonance-assisted femtosecond laser printing for deep-ultraviolet to near-infrared nano dispersion devices
State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, Tsinghua University（精密测试技术与仪器国家重点实验室，精密仪器系，清华大学）；MIIT Key Laboratory of Complex-field Intelligent Exploration, School of Optics and Photonics, Beijing Institute of Technology（工业和信息化部复杂场智能探测重点实验室，光学与光子学院，北京理工大学）
Femtosecond-to-millisecond holographic imaging of laser ablation dynamics
Institute for Photon Science and Technology, The University of Tokyo（光子科学技术研究所，东京大学）；Department of Advanced Materials Science, The University of Tokyo（先进材料科学系，东京大学）；RIKEN Center for Advanced Photonics, RIKEN（理化学研究所先进光子学中心，理化学研究所）
Technical design report of a complete and compact broadband high-harmonics femtosecond beamline based on a modular hollow waveguide for photons generation centered on the upper region of the extreme ultraviolet spectral range
Institut de Physique et Chimie des Materiaux, CNRS, IPCMS, UMR 7504（材料物理与化学研究所）；Université de Caen Normandie, ENSICAEN, CNRS/IN2P3, LPC Caen UMR6534（卡昂诺曼底大学）
Antisymmetric chirp transfer to high-energy ultraviolet pulses via gas-based chirped four-wave mixing
University of California Los Angeles（加州大学洛杉矶分校）；California NanoSystems Institute（加州纳米系统研究所）；SLAC National Accelerator Laboratory, Stanford University（斯坦福大学SLAC国家加速器实验室）
Development of a 10.8-eV Tabletop Femtosecond Laser with Tunable Polarization for High-Resolution Angle-Resolved Photoemission Spectroscopy
Institute of Physics, Chinese Academy of Sciences（中国科学院物理研究所）；State Key Laboratory of Low Dimensional Quantum Physics and Department of Physics, Tsinghua University（清华大学物理系低维量子物理国家重点实验室）；School of Information Science and Engineering, Shandong University（山东大学信息科学与工程学院）；Tsientang Institute for Advanced Study, Zhejiang（浙江千唐高等研究院）；Interdisciplinary Institute of Light-Element Quantum Materials and Research Center for Light- Element Advanced Materials, Peking University（北京大学轻元素量子材料交叉研究院及轻元素先进材料研究中心）；Songshan Lake Materials Laboratory（松山湖材料实验室）
Deep-ultraviolet Cherenkov radiation in all-normal-dispersion waveguide enabled by spatial-temporal dynamics
State Key Laboratory of Ultra-intense Laser Science and Technology, Shanghai Institute of Optics and Fine Mechanics (SIOM), Chinese Academy of Sciences (CAS)（超强激光科学与技术国家重点实验室，中国科学院上海光学精密机械研究所）；Russell Centre for Advanced Lightwave Science, Shanghai Institute of Optics and Fine Mechanics (SIOM) and Hangzhou Institute of Optics and Fine Mechanics (HIOM)（先进光波科学中心，中国科学院上海光学精密机械研究所和中国科学院杭州光学精密机械研究所）；Zhejiang Key Laboratory of Microstructured Specialty Optical Fiber, Hangzhou Institute of Optics and Fine Mechanics (HIOM)（微结构特种光纤浙江省重点实验室，中国科学院杭州光学精密机械研究所）；State Key Lab for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University（介观物理国家重点实验室和纳米光电前沿科学中心，北京大学物理学院）；Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences（杭州高等研究院，中国科学院大学）；Zhangjiang Laboratory（张江实验室）
Active Control of Extreme Ultraviolet Photon Flux and Resolution with a Plane Ruled Reflection Grating Spectrometer that Measures Diverging High-Harmonics
Angle-resolved photoemission spectroscopy with 9-eV photon-energy pulses generated in a gas-filled hollow-core photonic crystal fiber
本文利用充气空芯光子晶体光纤中光孤子的传输特性，研究了一种新的紫外辐射源，并将其应用于角分辨光电子能谱（ARPES）。只有几μJ能量的近红外飞秒脉冲在充气光纤内产生5.5至9 eV的真空紫外（VUV）辐射。这些脉冲被用来测量的拓扑绝缘体Bi 2 Se 3的能带结构的信噪比与高次谐波从气体射流获得。两个数量级的效率增益承诺在数百kHz甚至MHz的重复率下进行时间分辨的ARPES测量，光子能量覆盖大多数材料的第一布里渊区。
Programmable spectral phase transfer to the ultraviolet by gas-filled-fibre four-wave mixing
University of California Los Angeles（加州大学洛杉矶分校）；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）
