Generation of coherent broadband high photon flux continua in the XUV with a sub-two-cycle fiber laser
Klas R, Eschen W, Kirsche A, Rothhardt J, Limpert J (2020)
Publication Type: Journal article
Publication year: 2020
Journal
Book Volume: 28
Pages Range: 6188-6196
Journal Issue: 5
DOI: 10.1364/OE.28.006188
Abstract
High harmonic sources can provide ultrashort pulses of coherent radiation in the XUV and X-ray spectral region. In this paper we utilize a sub-two-cycle femtosecond fiber laser to efficiently generate a broadband continuum of high-order harmonics between 70 eV and 120 eV. The average power delivered by this source ranges from > 0.2 µW/eV at 80 eV to >0.03 µW/eV at 120 eV. At 92 eV (13.5 nm wavelength), we measured a coherent record-high average power of 0.1 µW/eV, which corresponds to 7 · 109 ph/s/eV, with a long-term stability of 0.8% rms deviation over a 20 min time period. The presented approach is average power scalable and promises up to 1011 ph/s/eV in the near future. With additional carrier-envelop phase control even isolated attosecond pulses can be expected from such sources. The combination of high flux, high photon energy and ultrashort (sub-) fs duration will enable photon-hungry time-resolved and multidimensional studies.
Involved external institutions
Germany (DE)How to cite
APA:
Klas, R., Eschen, W., Kirsche, A., Rothhardt, J., & Limpert, J. (2020). Generation of coherent broadband high photon flux continua in the XUV with a sub-two-cycle fiber laser. Optics Express, 28(5), 6188-6196. https://doi.org/10.1364/OE.28.006188
MLA:
Klas, Robert, et al. "Generation of coherent broadband high photon flux continua in the XUV with a sub-two-cycle fiber laser." Optics Express 28.5 (2020): 6188-6196.
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