| Autor: |
Hariton V, Jiang Y, Schönberg A, Seidel M, Wieland M, Prandolini MJ, Hartl I, Drescher M, Heyl CM |
| Jazyk: |
angličtina |
| Zdroj: |
Optics letters [Opt Lett] 2024 Jul 01; Vol. 49 (13), pp. 3769-3772. |
| DOI: |
10.1364/OL.527988 |
| Abstrakt: |
Ultrashort ultraviolet (UV) pulses are pivotal for resolving ultrafast electron dynamics. However, their efficient generation is strongly impeded by material dispersion and two-photon absorption, in particular, if pulse durations around a few tens of femtoseconds or below are targeted. Here, we present a new (to our knowledge) approach to ultrashort UV pulse generation: using the fourth-harmonic generation output of a commercial ytterbium laser system delivering 220 fs UV pulses, we implement a multi-pass cell (MPC) providing 5.6 µJ pulses at 256 nm, compressed to 30.5 fs. Our results set a short-wavelength record for MPC post-compression while offering attractive options to navigate the trade-off between upconversion efficiency and acceptance bandwidth for UV pulse production. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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