Bright continuously tunable vacuum ultraviolet source for ultrafast spectroscopy

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2FCZ______%3A_____%2F23%3AN0000012" target="_blank" >RIV/CZ______:_____/23:N0000012 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21340/24:00371459 RIV/CZ______:_____/24:N0000004

Výsledek na webu

<a href="https://www.nature.com/articles/s42005-023-01513-5" target="_blank" >https://www.nature.com/articles/s42005-023-01513-5</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1038/s42005-023-01513-5" target="_blank" >10.1038/s42005-023-01513-5</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Bright continuously tunable vacuum ultraviolet source for ultrafast spectroscopy

Popis výsledku v původním jazyce

Ultrafast electron dynamics drive phenomena such as photochemical reactions, catalysis, and light harvesting. To capture such dynamics in real-time, femtosecond to attosecond light sources are extensively used. However, an exact match between the excitation photon energy and a characteristic resonance is crucial. High-harmonic generation sources are advantageous in terms of pulse duration but limited in spectral tunability in the vacuum ultraviolet range. Here, we present a monochromatic femtosecond source continuously tunable around 21 eV photon energy utilizing the second harmonic of an optical parametric chirped pulse amplification laser system to drive high-harmonic generation. The unique tunability of the source is verified in an experiment probing the interatomic Coulombic decay in doped He nanodroplets across the He absorption bands. Moreover, we achieved intensities sufficient for driving collective processes in multiply excited helium nanodroplets, which have been previously observed only at free electron lasers.

Název v anglickém jazyce

Bright continuously tunable vacuum ultraviolet source for ultrafast spectroscopy

Popis výsledku anglicky

Ultrafast electron dynamics drive phenomena such as photochemical reactions, catalysis, and light harvesting. To capture such dynamics in real-time, femtosecond to attosecond light sources are extensively used. However, an exact match between the excitation photon energy and a characteristic resonance is crucial. High-harmonic generation sources are advantageous in terms of pulse duration but limited in spectral tunability in the vacuum ultraviolet range. Here, we present a monochromatic femtosecond source continuously tunable around 21 eV photon energy utilizing the second harmonic of an optical parametric chirped pulse amplification laser system to drive high-harmonic generation. The unique tunability of the source is verified in an experiment probing the interatomic Coulombic decay in doped He nanodroplets across the He absorption bands. Moreover, we achieved intensities sufficient for driving collective processes in multiply excited helium nanodroplets, which have been previously observed only at free electron lasers.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

<a href="/cs/project/EF16_019%2F0000789" target="_blank" >EF16_019/0000789: Pokročilý výzkum s využitím fotonů a částic vytvořených vysoce intenzivními lasery</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Communication Physics

ISSN

2399-3650

e-ISSN

—

Svazek periodika

7

Číslo periodika v rámci svazku

7

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

9

Strana od-do

26

Kód UT WoS článku

001140977900003

EID výsledku v databázi Scopus

2-s2.0-85181876450