Zobrazeno 1 - 10
of 118
pro vyhledávání: '"Kozák Martin"'
Inelastic interaction between coherent light with constant frequency and free electrons enables periodic phase modulation of electron wave packets leading to periodic side-bands in the electron energy spectra. In this Letter we propose a generalizati
Externí odkaz:
http://arxiv.org/abs/2411.06814
Publikováno v:
Phys. Rev. Applied 22 (2024) 054017
In this work we propose a method for probing the chirality of nanoscale electromagnetic near fields utilizing the properties of a coherent superposition of free-electron vortex states in electron microscopes. Electron beams optically modulated into v
Externí odkaz:
http://arxiv.org/abs/2411.05579
Autor:
Gindl, Adam, Suthar, Pawan, Trojánek, František, Malý, Petr, Derrien, Thibault J. -Y., Kozák, Martin
Controlling the electron dynamics in matter by individual oscillations of light fields has recently led to the development of attosecond metrology. One of the phenomena resulting from the nonlinear response of materials in the strong-field interactio
Externí odkaz:
http://arxiv.org/abs/2310.07254
Autor:
Kozák Martin, Higuchi Takuya, McNeur Joshua, Shiloh Roy, Heide Christian, Paschen Timo, Yousefi Peyman, Sturm Constanze, Li Ang, Illmer Johannes, Meier Stefan, Schönenberger Norbert, Dienstbier Philip, Tafel Alexander, Weber Philipp, Zimmermann Robert, Seidling Michael, Mittelbach Anna, Heimerl Jonas, Eckstein Timo, Hundhausen Martin, Ristein Jürgen, Hommelhoff Peter
Publikováno v:
EPJ Web of Conferences, Vol 205, p 08009 (2019)
New ways of controlling quasi-free and free electrons by means of phase-controlled ultrashort laser pulses are demonstrated: from strong-field physics in the conducting 2-d material graphene and at the surface of nanostructures, to laser acceleration
Externí odkaz:
https://doaj.org/article/6f1e6eb3c694457ea2e3c48a6a05bf6c
Autor:
Yousefi, Peyman, Schönenberger, Norbert, McNeur, Joshua, Kozák, Martin, Niedermayer, Uwe, Hommelhoff, Peter
We report on the efficacy of a novel design for dielectric laser accelerators by adding a distributed Bragg reflector (DBR) to a dual pillar grating accelerating structure. This mimics a double-sided laser illumination, resulting in an enhanced longi
Externí odkaz:
http://arxiv.org/abs/1905.05489
Publikováno v:
Phys. Rev. Lett. 120, 103203 (2018)
Atomic motion dynamics during structural changes or chemical reactions have been visualized by picosecond and femtosecond pulsed electron beams via ultrafast electron diffraction and microscopy. Imaging the even faster dynamics of electrons in atoms,
Externí odkaz:
http://arxiv.org/abs/1905.05245
Publikováno v:
Nature Physics, Volume 14, Issue 2, pp. 121-125 (2018)
In the early days of quantum mechanics Kapitza and Dirac predicted that matter waves would scatter off the optical intensity grating formed by two counter-propagating light waves [1]. This interaction, driven by the ponderomotive potential of the opt
Externí odkaz:
http://arxiv.org/abs/1905.05240
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Autor:
Yousefi, Peyman, McNeur, Joshua, Kozák, Martin, Niedermayer, Uwe, Gannott, Florentina, Lohse, Olga, Boine-Frankenheim, Oliver, Hommelhoff, Peter
Dielectric laser accelerators (DLAs) have proven to be good candidates for miniaturized particle accelerators. They rely on micro-fabricated dielectrics which are able to modulate the kinetic energy of the incoming electron beam under a proper laser
Externí odkaz:
http://arxiv.org/abs/1801.05234
Akademický článek
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