1. Extreme ultraviolet light source at a megahertz repetition rate based on high-harmonic generation inside a mode-locked thin-disk laser oscillator
- Author
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Florian Emaury, Christian Kränkel, François Labaye, Norbert Modsching, Clément Paradis, Valentin J. Wittwer, Andreas Diebold, Thomas Südmeyer, Christopher R. Phillips, M. S. Gaponenko, I. J. Graumann, Clara J. Saraceno, Loïc Merceron, and Ursula Keller
- Subjects
Physics ,business.industry ,Attosecond ,02 engineering and technology ,021001 nanoscience & nanotechnology ,Laser ,7. Clean energy ,01 natural sciences ,Atomic and Molecular Physics, and Optics ,law.invention ,010309 optics ,Optics ,Thin disk ,Mode-locking ,law ,Harmonics ,Extreme ultraviolet ,0103 physical sciences ,Harmonic ,High harmonic generation ,0210 nano-technology ,business - Abstract
We demonstrate a compact extreme ultraviolet (XUV) source based on high-harmonic generation (HHG) driven directly inside the cavity of a mode-locked thin-disk laser oscillator. The laser is directly diode-pumped at a power of only 51 W and operates at a wavelength of 1034 nm and a 17.35 MHz repetition rate. We drive HHG in a high-pressure xenon gas jet with an intracavity peak intensity of 2.8×1013 W/cm2 and 320 W of intracavity average power. Despite the high-pressure gas jet, the laser operates at high stability. We detect harmonics up to the 17th order (60.8 nm, 20.4 eV) and estimate a flux of 2.6×108 photons/s for the 11th harmonic (94 nm, 13.2 eV). Due to the power scalability of the thin-disk concept, this class of compact XUV sources has the potential to become a versatile tool for areas such as attosecond science, XUV spectroscopy, and high-resolution imaging.
- Published
- 2017