Počet záznamů: 1
Spectral broadening and a prospect for pulse compression of Yb:YAG thin-disk laser pulses by nonlinear SHG in a BBO crystal with time predelay and tilting of the pulse fronts
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SYSNO ASEP 0556011 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Spectral broadening and a prospect for pulse compression of Yb:YAG thin-disk laser pulses by nonlinear SHG in a BBO crystal with time predelay and tilting of the pulse fronts Tvůrce(i) Duda, Martin (FZU-D) ORCID
Novák, Ondřej (FZU-D) RID, ORCID
Cimrman, Martin (FZU-D) ORCID
Huynh, Jaroslav (FZU-D) RID, ORCID
Smrž, Martin (FZU-D) RID, ORCID
Mocek, Tomáš (FZU-D) RID, ORCID, SAICelkový počet autorů 6 Zdroj.dok. Optics Continuum. - : Optica - ISSN 2770-0208
Roč. 1, č. 1 (2022), s. 16-30Poč.str. 16 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova pulse compression ; nonlinear optical crystal ; Yb:YAG laser ; BBO crystals Vědní obor RIV BH - Optika, masery a lasery Obor OECD Optics (including laser optics and quantum optics) CEP EF15_006/0000674 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Způsob publikování Open access Institucionální podpora FZU-D - RVO:68378271 UT WOS 000835315500003 EID SCOPUS 85125951362 DOI https://doi.org/10.1364/OPTCON.437879 Anotace Pulse compression by second harmonic generation in a type II nonlinear optical crystal controlled by a time predelay of the faster input pulse is not simple to achieve high-average power Yb:YAG lasers with wavelength of 1030 nm. The reason is that the borate nonlinear crystals with their excellent thermal properties do not have the optimal ratio of group velocities of the interacting pulses to achieve efficient pulse compression. We have changed the effective group velocities by tilting the pulse fronts at a diffraction grating and imaging the tilted 1.7 ps pulses into the 6 and 8.5 mm thick BBO crystals. As a result, we have measured significant spectral broadening to 4.5 nm, supporting pulses as short as 100 fs, with an energy conversion efficiency in excess of 20 %. The measured data correspond well with numerical simulations. This research opens a way to extend the range of possible applications of Yb:YAG high-average-power thin-disk lasers into the fs regime. Pracoviště Fyzikální ústav Kontakt Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Rok sběru 2023 Elektronická adresa http://hdl.handle.net/11104/0330377
Počet záznamů: 1