Počet záznamů: 1
Efficiency control of high-order harmonic generation in gases using driving pulse spectral features
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SYSNO ASEP 0503450 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Efficiency control of high-order harmonic generation in gases using driving pulse spectral features Tvůrce(i) Nefedova, V. (RU)
Ciappina, M. F. (AR)
Finke, O. (CZ)
Albrecht, M. (CZ)
Kozlová, Michaela (UFP-V)
Nejdl, Jaroslav (UFP-V) RIDCelkový počet autorů 6 Číslo článku 191101 Zdroj.dok. Applied Physics Letters. - : AIP Publishing - ISSN 0003-6951
Roč. 113, č. 19 (2018), s. 1-6Poč.str. 6 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova nonlinear propagation ; spectral shift ; conversion efficiency ; high-order harmonic generation Vědní obor RIV BL - Fyzika plazmatu a výboje v plynech Obor OECD Fluids and plasma physics (including surface physics) CEP LM2015083 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UFP-V - RVO:61389021 UT WOS 000449713800001 EID SCOPUS 85056283846 DOI 10.1063/1.5050691 Anotace The low conversion efficiency of high-order harmonic generation (HHG) in gases is an insurmountable limitation for many applications, where a considerable photon flux is an instrumental prerequisite. We present a study of the HHG conversion efficiency dependence on the driving laser intensity and analyze the conditions for optimal phase-matching in a loose focusing configuration and long generation medium using a Ti:Sapphire laser. Moreover, by determination of the influence of plasma effects on the driving laser pulse, we observe a correlation between the HHG conversion efficiency and the blueshift of the fundamental pulse. The maximal HHG conversion efficiency is achieved just before the driving laser spectrum is considerably affected by the plasma. Similar behavior is observed in HHG for different noble gases. In this respect, the appearance of a plasma-induced spectral shift in the driving laser might serve as an indication of a substantial loss of HHG conversion efficiency. Consequently, our findings can be exploited to obtain essential information about the laser-plasma interaction process during HHG and can pave the way for a more convenient control of optimal HHG conditions. Pracoviště Ústav fyziky plazmatu Kontakt Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Rok sběru 2019 Elektronická adresa https://aip.scitation.org/doi/10.1063/1.5050691
Počet záznamů: 1