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Article Dans Une Revue APL Photonics Année : 2023

Spectrally tunable ultrashort monochromatized extreme ultraviolet pulses at 100 kHz

Zoltán Filus
Tímea Grósz
Lénárd Gulyás Oldal
Massimo de Marco
Péter Jójárt
Zsolt Bengery
Barnabás Gilicze
Balázs Major

Résumé

We present the experimental realization of spectrally tunable, ultrashort, quasi-monochromatic extreme ultraviolet (XUV) pulses generated at 100 kHz repetition rate in a user-oriented gas high harmonic generation beamline of the Extreme Light Infrastructure—Attosecond Light Pulse Source facility. Versatile spectral and temporal shaping of the XUV pulses is accomplished with a double-grating, time-delay compensated monochromator accommodating the two composing stages in a novel, asymmetrical geometry. This configuration supports the achievement of high monochromatic XUV flux (2.8 ± 0.9 × 1010 photons/s at 39.7 eV selected with 700 meV full width at half maximum bandwidth) combined with ultrashort pulse duration (4.0 ± 0.2 fs using 12.1 ± 0.6 fs driving pulses) and small spot size (sub-100 µm). Focusability, spectral bandwidth, and overall photon flux of the produced radiation were investigated, covering a wide range of instrumental configurations. Moreover, complete temporal (intensity and phase) characterization of the few-femtosecond monochromatic XUV pulses—a goal that is difficult to achieve by conventional reconstruction techniques—has been realized using a ptychographic algorithm on experimentally recorded XUV-infrared pump–probe traces. The presented results contribute to in situ, time-resolved experiments, accessing direct information on the electronic structure dynamics of novel target materials.
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Dates et versions

cea-04453326 , version 1 (14-02-2024)

Identifiants

Citer

Tamás Csizmadia, Zoltán Filus, Tímea Grósz, Peng Ye, Lénárd Gulyás Oldal, et al.. Spectrally tunable ultrashort monochromatized extreme ultraviolet pulses at 100 kHz. APL Photonics, 2023, 8 (5), pp.056105. ⟨10.1063/5.0147576⟩. ⟨cea-04453326⟩
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