ELFT HÍRADÓ

[Szeminárium koordinátor <szfi-seminar AT wigner.mta.hu>]

WIGNER SZFI Seminar

Magas harmonikusok és spektrális interferometria, izolált attoszekundumos impulzusok szilárdtest lézerplazmából

Földes István
Wigner RCP RMI

Tuesday, 4 December 2018 10:00, KFKI Campus, Bldg. 1, 2nd floor, Conference Room

The interaction of ultra-intense laser pulses with matter opened the way to generate the shortest light pulses available nowadays in the attosecond regime. Ionized solid surfaces, also called plasma mirrors, are promising tools to enhance the potential of attosecond sources in terms of photon energy, photon number and duration especially at relativistic laser intensities. Although the production of isolated attosecond pulses and the understanding of the underlying interactions represent a fundamental step towards the realization of such sources, these are challenging and have not yet been demonstrated. Here, we present laser-waveform-dependent high-order harmonic radiation in the extreme ultraviolet spectral range supporting well isolated attosecond pulses and utilize spectral interferometry to understand its relativistic generation mechanism. This novel interpretation of the measured spectra provides access to unrevealed temporal and spatial properties such as spectral phase difference between attosecond pulses and field-driven plasma surface motion during the process.

 

Everyone is welcome to attend.

János Asbóth
szfi-seminar AT wigner.mta.hu