title: Generation of µW level plateau harmonics at high repetition rate.
abstract: The process of high harmonic generation allows for coherent transfer of infrared laser light to the extreme ultraviolet spectral range opening a variety of applications. The low conversion efficiency of this process calls for optimization or higher repetition rate intense ultrashort pulse lasers. Here we present state-of-the-art fiber laser systems for the generation of high harmonics up to 1 MHz repetition rate. We perform measurements of the average power with a calibrated spectrometer and achieved µW harmonics between 45 nm and 61 nm (H23-H17) at a repetition rate of 50 kHz. Additionally, we show the potential for few-cycle pulses at high average power and repetition rate that may enable water-window harmonics at unprecedented repetition rate.
authors: Friedrich Schiller University Jena, Institute of Applied Physics, Albert-Einstein-Strasse 15, 07745 Jena, Germany. haedrich@iap.uni-jena.de
authors: S
authors: S
authors: Hädrich
authors: M
authors: M
authors: Krebs
authors: J
authors: J
authors: Rothhardt
authors: H
authors: H
authors: Carstens
authors: S
authors: S
authors: Demmler
authors: J
authors: J
authors: Limpert
authors: A
authors: A
authors: Tünnermann
mesh_terms: D000669:Amplifiers, Electronic; D003198:Computer Simulation; D004735:Energy Transfer; D004867:Equipment Design; D007834:Lasers; D008027:Light; D008962:Models, Theoretical; D009991:Oscillometry / Q000379:methods*; D012542:Scattering, Radiation; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation