Energy scaling in a compact bulk multi-pass cell enabled by Laguerre-Gaussian single-vortex beams
| Autor: | Koltalo, Victor, Westerberg, Saga, Redon, Melvin, Beaufort, Gaspard, Raab, Ann-Kathrin, Guo, Chen, Arnold, Cord L., Viotti, Anne-Lise |
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| Rok vydání: | 2024 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | We report pulse energy scaling enabled by the use of Laguerre-Gaussian single-vortex ($\text{LG}_{0,l}$) beams for spectral broadening in a sub-40 cm long Herriott-type bulk multi-pass cell. Beams with orders ${l= 1-3}$ are generated by a spatial light modulator, which facilitates rapid and precise reconfiguration of the experimental conditions. 180 fs pulses with 610 uJ pulse energy are post-compressed to 44 fs using an $\text{LG}_{0,3}$ beam, boosting the peak power of an Ytterbium laser system from 2.5 GW to 9.1 GW. The spatial homogeneity of the output $\text{LG}_{0,l}$ beams is quantified and the topological charge is spectrally-resolved and shown to be conserved after compression by employing a custom spatio-temporal coupling measurement setup. Comment: 8 pages, 9 figures |
| Databáze: | arXiv |
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