Generation of µW level plateau harmonics at high repetition rate

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. He...

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Bibliographic Details
Published in:Optics express 2011-09, Vol.19 (20), p.19374-19383
Main Authors: Hädrich, S, Krebs, M, Rothhardt, J, Carstens, H, Demmler, S, Limpert, J, Tünnermann, A
Format: Article
Language:English
Subjects:
Amplifiers, Electronic
Computer Simulation
Energy Transfer
Equipment Design
Lasers
Light
Models, Theoretical
Oscillometry - methods
Scattering, Radiation
Signal Processing, Computer-Assisted - instrumentation
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Summary: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.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.19.019374