6533b854fe1ef96bd12aeb4b

RESEARCH PRODUCT

Tracking Autoionizing-Wave-Packet Dynamics at the 1-fs Temporal Scale

J. KruseD. CharalambidisD. CharalambidisGeorge D. TsakirisE. SkantzakisOlivier FaucherC. KalpouzosParaskevas Tzallas

subject

PhysicsWave packetGeneral Physics and Astronomy01 natural sciences7. Clean energyFourier transform spectroscopy010309 opticssymbols.namesakeFourier transformAutoionizationExcited state0103 physical sciencesPhysics::Atomic and Molecular ClusterssymbolsState of matterAtomic physics010306 general physicsSpectroscopyUltrashort pulse

description

We present time-resolved studies and Fourier transform spectroscopy of inner-shell excited states undergoing Auger decay and doubly excited autoionizing states, utilizing coherent extreme-ultraviolet (XUV) radiation continua. Series of states spanning a range of ∼4  eV are excited simultaneously. An XUV probe pulse tracks the oscillatory and decaying evolution of the formed wave packet. The Fourier transform of the measured trace reproduces the spectrum of the series. The present work paves the way for ultrabroadband XUV spectroscopy and studies of ultrafast dynamics in all states of matter.

https://doi.org/10.1103/physrevlett.105.043902