Ponderomotive Generation and Detection of Attosecond Free-Electron Pulse Trains

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10376658" target="_blank" >RIV/00216208:11320/18:10376658 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1103/PhysRevLett.120.103203" target="_blank" >https://doi.org/10.1103/PhysRevLett.120.103203</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevLett.120.103203" target="_blank" >10.1103/PhysRevLett.120.103203</a>

Result language

angličtina

Original language name

Ponderomotive Generation and Detection of Attosecond Free-Electron Pulse Trains

Original language description

Atomic motion dynamics during structural changes or chemical reactions have been visualized by pico- and femtosecond pulsed electron beams via ultrafast electron diffraction and microscopy. Imaging the even faster dynamics of electrons in atoms, molecules, and solids requires electron pulses with subfemtosecond durations. We demonstrate here the all-optical generation of trains of attosecond free-electron pulses. The concept is based on the periodic energy modulation of a pulsed electron beam via an inelastic interaction, with the ponderomotive potential of an optical traveling wave generated by two femtosecond laser pulses at different frequencies in vacuum. The subsequent dispersive propagation leads to a compression of the electrons and the formation of ultrashort pulses. The longitudinal phase space evolution of the electrons after compression is mapped by a second phase-locked interaction. The comparison of measured and calculated spectrograms reveals the attosecond temporal structure of the compressed electron pulse trains with individual pulse durations of less than 300 as. This technique can be utilized for tailoring and initial characterization of suboptical-cycle free-electron pulses at high repetition rates for stroboscopic time-resolved experiments with subfemtosecond time resolution.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10306 - Optics (including laser optics and quantum optics)

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2018

Confidentiality

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

Name of the periodical

Physical Review Letters

ISSN

0031-9007

e-ISSN

—

Volume of the periodical

120

Issue of the periodical within the volume

10

Country of publishing house

US - UNITED STATES

Number of pages

6

Pages from-to

103203-6

UT code for WoS article

000427020400008

EID of the result in the Scopus database

2-s2.0-85043692234