Author: Roensch-Schulenburg, J.     [Rönsch-Schulenburg, J.]
Paper Title Page
TUP2WA03 Harmonic Lasing in X-Ray FELs: Theory and Experiment 68
 
  • E. Schneidmiller, B. Faatz, M. Kuhlmann, J. Rönsch-Schulenburg, S. Schreiber, M. Tischer, M.V. Yurkov
    DESY, Hamburg, Germany
  
  Har­monic las­ing in XFELs is an op­por­tu­nity to ex­tend op­er­at­ing range of ex­ist­ing and planned X-ray FEL user fa­cil­i­ties*. Con­trary to non­lin­ear har­monic gen­er­a­tion, har­monic las­ing can pro­vide much more in­tense, sta­ble, and nar­row-band FEL beam which is eas­ier to han­dle due to the sup­pressed fun­da­men­tal. An­other in­ter­est­ing ap­pli­ca­tion of har­monic las­ing is Har­monic Las­ing Self-Seeded (HLSS) FEL*,** that al­lows to im­prove lon­gi­tu­di­nal co­her­ence and spec­tral power of a SASE FEL. Re­cently*** this con­cept was suc­cess­fully tested at FLASH2 in the range 4.5 - 15 nm. That was also the first ex­per­i­men­tal demon­stra­tion of har­monic las­ing in a high-gain FEL and at a short wave­length (be­fore it worked only in in­frared FEL os­cil­la­tors). In this con­tri­bu­tion we de­scribe the con­cepts of har­monic las­ing and of HLSS FEL, and pre­sent the ex­per­i­men­tal re­sults from FLASH2.
* E.Schneidmiller and M.Yurkov, Phys. Rev. ST-AB 15(2012)080702
** E.Schneidmiller and M.Yurkov, Proc. of FEL2013, p.700
*** E.Schneidmiller et al., Phys. Rev. Accel. Beams 20(2017)020705 		 
slides icon Slides TUP2WA03 [3.378 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-FLS2018-TUP2WA03  
Export • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)