Ultra-short-pulse high-average-power megahertz-repetition-rate coherent extreme-ultraviolet light source  

作　　者：Robert Klas Alexander Kirsche Martin Gebhardt Joachim Buldt Henning Stark Steffen Hädrich Jan Rothhardt Jens Limpert 

机构地区：[1]Institute of Applied Physics,Abbe Center of Photonics,Friedrich-Schiller-University Jena,Albert-Einstein-Str.15,07745 Jena,Germany [2]Helmholtz-Institute Jena,Fröbelstieg 3,07743 Jena,Germany [3]Active Fiber Systems GmbH,Ernst-Ruska-Ring 17,07745 Jena,Germany. [4]Fraunhofer Institute for Applied Optics and Precision Engineering,Albert-Einstein-Str.7,07745 Jena,Germany.

出　　处：《PhotoniX》2021年第1期439-446,共8页智汇光学（英文）

基　　金：supported by the Fraunhofer Cluster of Excellence Advanced Photon Sources(CAPS),by the Innovation Pool of the Research Field Matter of the Helmholtz Association of German Research Centers in project(ECRAPS);by APPA R&D:Licht-Materie Wechselwirkung mit hochgeladenen Ionen(13 N12082);by the Thüringer Ministerium für Bildung,Wissenschaft und Kultur(501100004404,2017 FGR 0076);by the Thüringer Aufbaubank(TAB Forschergruppe 2015FGR0094);by the Helmholtz association under grant agreement HGF ExNet-0019-Phase 2-3.

摘　　要：High harmonic generation(HHG)enables coherent extreme-ultraviolet(XUV)radiation with ultra-short pulse duration in a table-top setup.This has already enabled a plethora of applications.Nearly all of these applications would benefit from a high photon flux to increase the signal-to-noise ratio and decrease measurement times.In addition,shortest pulses are desired to investigate fastest dynamics in fields as diverse as physics,biology,chemistry and material sciences.In this work,the up-to-date most powerful table-top XUV source with 12.9±3.9mW in a single harmonic line at 26.5 eV is demonstrated via HHG of a frequency-doubled and post-compressed fibre laser.At the same time the spectrum supports a Fourier-limited pulse duration of sub-6 fs in the XUV,which allows accessing ultrafast dynamics with an order of magnitude higher photon flux than previously demonstrated.This concept will greatly advance and facilitate applications of XUV radiation in science and technology and enable photonhungry ultrafast studies.

关 键 词：ULTRAVIOLET extreme COHERENT 

分 类 号：O43[机械工程—光学工程]