Exploring new avenues in high repetition rate table-top coherent extreme ultraviolet sources

作     者：Steffen Hadrich Manuel Krebs Armin Hoffmann Arno Klenke Jan Rothhardt Jens Limpert Andreas Tunnermann 

作者机构：Friedrich-Schiller-Universitat JenaInstitute of Applied PhysicsAbbe Center of PhotonicsAlbert-Einstein-Straße 1507745 JenaGermany Helmholtz-Institute JenaFrobelstieg 307743 JenaGermany Fraunhofer Institute for Applied Optics and Precision EngineeringAlbert-Einstein-Straße 707745 JenaGermany 

出 版 物：《Light(Science & Applications)》 (光（科学与应用)（英文版）)

年 卷 期：2015年第4卷第1期

页      面：231-236页

核心收录：

学科分类：0808[工学-电气工程] 070207[理学-光学] 0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：This work was partly supported by the German Federal Ministry of Education and Research(BMBF) the European Research Council under the European Union’s Seventh Framework Programme(FP7/2007-2013)/ERC Grant Agreement No.240460 Arno Klenke and Jan Rothhardt acknowledge financial support by the Helmholtz-Institute Jena 

主　　题：coherent extreme ultraviolet sources high average power high harmonic generation nonlinear compression ultrafast laser 

摘      要：The process of high harmonic generation(HHG)enables the development of table-top sources of coherent extreme ultraviolet(XUV)*** these are now matured sources,they still mostly rely on bulk laser technology that limits the attainable repetition rate to the low kilohertz ***,many of the emerging applications of such light sources(e.g.,photoelectron spectroscopy and microscopy,coherent diffractive imaging,or frequency metrology in the XUV spectral region)require an increase in the repetition ***,these sources are operated with a multi-MHz repetition rate and deliver a high photon flux *** far,this regime has been solely addressed using passive enhancement cavities together with low energy and high repetition rate ***,a novel route with significantly reduced complexity(omitting the requirement of an external actively stabilized resonator)is demonstrated that achieves the previously mentioned demanding parameters.A krypton-filled Kagome photonic crystal fiber is used for efficient nonlinear compression of 9 μJ,250 fs pulses leading to,7 μJ,31 fs pulses at 10.7 MHz repetition *** compressed pulses are used for HHG in a gas *** attention is devoted to achieving phase-matched(transiently)generation yielding.10^(13) photons s^(-1)(.50 μW)at 27.7 *** new spatially coherent XUV source improved the photon flux by four orders of magnitude for direct multi-MHZ experiments,thus demonstrating the considerable potential of this source.