[Fuuk-ext-l] Invitation to Seminar of Institute of Physics, MFF UK, on Tue 1.11. from 14:00, speaker RNDr. Martin Kozák, Ph.D.

[Jaroslav Hamrle]

Dear colleagues,

It is my pleasure to invite you to Seminar of Institute of Physics of 
Charles University, entitled:

*Optical control of free electron beams – from inelastic scattering to 
quantum coherent interaction*

Speaker: RNDr. Martin Kozák, Ph.D. 
<https://physics.mff.cuni.cz/kchfo/ooe/kozak/>

Time:  Tuesday 1.11.2021 from 14:00

Place: Seminar room of Institute of Physics F285 (atelier) , second 
floor, Ke Karlovu 5, Prague

/Abstract://
/

/The natural time scales of electron wave packet dynamics in atoms, 
molecules, and solids lie in the attosecond time domain (1 as=10^−18 s). 
On the other hand, the spatial dimensions of electron orbitals are of 
the order of tens of picometers corresponding to the resolution of 
state-of-the-art electron microscopes. The combination of atomic spatial 
and attosecond temporal resolutions can be provided by highly coherent 
pulsed electron beams with density profiles modulated in the time domain 
by the interaction with coherent light fields.
/

/In this talk I will discuss the interaction of electrons with the 
ponderomotive potential of an optical travelling wave generated by 
two-color laser fields in vacuum. I will show that such process can 
efficiently accelerate sub-relativistic electrons and in the same time 
it can serve for generation and detection of attosecond electron pulse 
trains. Apart from classical scattering regime, this technique offers an 
opportunity for quantum coherent modulation of electron wavefunction in 
time domain, which can be considered as a generalization of 
Kapitza-Dirac experiment. By using tailored light fields, more advanced 
spatio-temporal shaping of electron wavepackets is possible, such as 
generation of isolated attosecond electron pulses or electron vortex 
states./

With my best regards

Jaroslav Hamrle

-- 
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Mgr. Jaroslav Hamrle, Ph.D.
Institute of Physics, room F232
Faculty of Mathematics and Physics
Charles University
Ke Karlovu 5
121 16 Prague
Czech Republic

tel: +420-95155 1340
email: hamrle na karlov.mff.cuni.cz
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