| Autor: |
Rajhans S, Escoto E, Khodakovskiy N, Velpula PK, Farace B, Grosse-Wortmann U, Shalloo RJ, Arnold CL, Põder K, Osterhoff J, Leemans WP, Hartl I, Heyl CM |
| Jazyk: |
angličtina |
| Zdroj: |
Optics letters [Opt Lett] 2023 Sep 15; Vol. 48 (18), pp. 4753-4756. |
| DOI: |
10.1364/OL.498042 |
| Abstrakt: |
Advancing ultrafast high-repetition-rate lasers to shortest pulse durations comprising only a few optical cycles while pushing their energy into the multi-millijoule regime opens a route toward terawatt-class peak powers at unprecedented average power. We explore this route via efficient post-compression of high-energy 1.2 ps pulses from an ytterbium InnoSlab laser to 9.6 fs duration using gas-filled multi-pass cells (MPCs) at a repetition rate of 1 kHz. Employing dual-stage compression with a second MPC stage supporting a close-to-octave-spanning bandwidth enabled by dispersion-matched dielectric mirrors, a record compression factor of 125 is reached at 70% overall efficiency, delivering 6.7 mJ pulses with a peak power of ∼0.3 TW. Moreover, we show that post-compression can improve the temporal contrast at multi-picosecond delay by at least one order of magnitude. Our results demonstrate efficient conversion of multi-millijoule picosecond lasers to high-peak-power few-cycle sources, prospectively opening up new parameter regimes for laser plasma physics, high energy physics, biomedicine, and attosecond science. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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