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ReLaX:the Helmholtz International Beamline for Extreme Fields high-intensity short-pulse laser driver for relativistic laser-matter interaction and strong-field science using the high energy density instrument at the European X-ray free electron laser fac

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high Power laser Science and Engineering 2021年第4期9卷 144-159页

作者： A.Laso Garcia H.Höppner A.Pelka C.Bähtz E.Brambrink S.Di Dio Cafiso J.Dreyer S.Göde M.Hassan T.Kluge J.Liu M.Makita D.Möller M.Nakatsutsumi T.R.Preston G.Priebe H.-P.Schlenvoigt J.-P.Schwinkendorf M.šmíd A.-M.Talposi M.Toncian U.Zastrau U.Schramm T.E.Cowan T.Toncian Helmholtz-Zentrum Dresden-Rossendorf 01328 DresdenGermany European XFEL 22869 SchenefeldGermany Extreme Light Infrastructure-Nuclear Physics and Faculty of Physics University of Bucharest077126 MagureleRomania Technische Universität Dresden 01062 DresdenGermany

high-energy and high-intensity lasers are essential for pushing the boundaries of *** development has allowed leaps forward in basic research areas,including laser±plasma interaction,high-energy density science,metrology,biology and medical *** Helmholtz International Beamline for Extreme Fields user consortium contributes and operates two high-peak-power optical lasers using the high energy density instrument at the European X-ray free electron laser(EuXFEL)*** lasers will be used to generate transient extreme states of density and temperature to be probed by the X-ray *** paper introduces the ReLaX laser,a short-pulse high-intensity Ti:Sa laser system,and discusses its characteristics as available for user *** will also present the first experimental commissioning results validating its successful integration into the EuXFEL infrastructure and viability as a relativisticintensity laser driver.

关键词： X-ray free electron laser high-intensity laser relativistic intensity laser Ti:Sa laser

Development of gated fiber detectors for laser-induced strong electromagnetic pulse environments

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Nuclear Science and Techniques 2021年第6期32卷 36-44页

作者： Po Hu Zhi-Guo Ma Kai Zhao Guo-Qiang Zhang De-Qing Fang Bao-Ren Wei Chang-Bo Fu Yu-Gang Ma Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China School of Physical Science and Technology Shanghai Tech UniversityShanghai 201210China School of Nuclear Sciences and Technology University of Chinese Academy of SciencesBeijing 100049China Key Laboratory of Nuclear Physics and Ion-beam Application(MOE) Institute of Modern PhysicsFudan UniversityShanghai 200433China Shanghai Advanced Research Institute Chinese Academy of SciencesShanghai 201210China

With the development of laser technologies,nuclear reactions can happen in high-temperature plasma environments induced by lasers and have attracted a lot of attention from different physical ***,studies on nuclear reactions in plasma are still limited by detecting *** is mainly due to the fact that extremely high electromagnetic pulses(EMPs)can also be induced when high-intensity lasers hit targets to induce plasma,and then cause dysfunction of many types of traditional ***,new particle detecting technologies are highly *** this paper,we report a recently developed gated fiber detector which can be used in harsh EMP *** this prototype detector,scintillating photons are coupled by fiber and then transferred to a gated photomultiplier tube which is located far away from the EMP source and shielded *** those measures,the EMPs can be avoided which may result that the device has the capability to identify a single event of nuclear reaction products generated in laser-induced plasma from noise EMP *** new type of detector can be widely used as a time-of-flight(TOF)detector in high-intensity laser nuclear physics experiments for detecting neutrons,photons,and other charged particles.

关键词： Gated fiber detector Radiation detection high-intensity laser Strong electromagnetic pulses

Overview and specifications of laser and target areas at the Intense laser Irradiation Laboratory

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high Power laser Science and Engineering 2021年第1期9卷 94-102页

作者： Leonida A.Gizzi Luca Labate Federica Baffigi Fernando Brandi Giancarlo Bussolino Lorenzo Fulgentini Petra Köster Daniele Palla Intense laser Irradiation Laboratory(ILIL) Istituto Nazionale di Ottica-Consiglio Nazionale delle Ricerche(INO-CNR)Sede Secondaria di Pisa56124 PisaItaly Istituto Nazionale di Fisica Nucleare(INFN) Sezione di Pisa56127 PisaItaly

We present the main features of the ultrashort, high-intensity laser installation at the Intense laser Irradiation Laboratory(ILIL) including laser, beam transport and target area specifications. The laboratory was designed to host laser–target interaction experiments of more than 220 TW peak power, in flexible focusing configurations, with ultrarelativistic intensity on the target. Specifications have been established via dedicated optical diagnostic assemblies and commissioning interaction experiments. In this paper we give a summary of laser specifications available to users,including spatial, spectral and temporal contrast features. The layout of the experimental target areas is presented, with attention to the available configurations of laser focusing geometries and diagnostics. Finally, we discuss radiation protection measures and mechanical stability of the laser focal spot on the target.

关键词： high-intensity laser laser focusing laser–plasma acceleration laboratory pointing stability radiation shielding ultrashort pulse amplification

Millijoule ultrafast optical parametric amplification as replacement for high-gain regenerative amplifiers

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high Power laser Science and Engineering 2023年第4期11卷 33-44页

作者： Yannik Zobus Christian Brabetz Johannes Hornung Jonas BOhland Dirk Reemts Ji-Ping Zou Markus Loeser Daniel Albach Ulrich Schramm Vincent Bagnoud Technische Universität Darmstadt DarmstadtGermany GSI Helmholtzzentrum für Schwerionenforschung GmbH DarmstadtGermany Laboratoire pour l’Utilisation des lasers Intenses CNRSEcole PolytechniquePalaiseauFrance Helmholtz-Zentrum Dresden-Rossendorf DresdenGermany Technische Universität Dresden DresdenGermany Helmholtz-Institut Jena JenaGermany

We report on the development of an ultrafast optical parametric amplifier front-end for the Petawatt high Energy laser for heavy Ion eXperiments(PHELIX)and the Petawatt ENergy-Efficient laser for Optical Plasma Experiments(PEnELOPE)*** front-end delivers broadband and stable amplification up to 1 mJ per pulse while maintaining a high beam *** implementation at PHELIX allowed one to bypass the front-end amplifier,which is known to be a source of *** the bypass,an amplified spontaneous emission contrast of 4.9×10^(−13)and a pre-pulse contrast of 6.2×10^(−11)could be *** to its high stability,high beam quality and its versatile pump amplifier,the system offers an alternative for high-gain regenerative amplifiers in the front-end of various laser systems.

关键词： high-intensity laser temporal laser contrast ultrafast optical parametric amplification