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UID:69e08b33d85bd
DTSTART:20260326T140000Z
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DTEND:20260326T150000Z
LOCATION:Elements Room
SUMMARY:ICFO | PETER KRAUS
CLASS:PUBLIC
DESCRIPTION:ABSTRACT:\nAttosecond\, atomic-scale movies remain a long-stand
 ing dream\, with transformative applications from tracking resonances in m
 etamaterials to observing phase transitions in strongly correlated materia
 ls. We propose a radical new route to this vision: HADES - Harmonic Deacti
 vation Microscopy. By confining solid-state HHG far below the diffraction 
 limit using an orbital-angular-momentum prepulse\, we achieve selective de
 activation of harmonic emission through a generalized quantum-optical fram
 ework we recently introduced and demonstrated. This mechanism interferes h
 idden photon pathways to enhance or suppress HHG with near-unity efficienc
 y. HADES opens the door to all-optical\, label-free super-resolution nanos
 copy and control over nonlinear light&ndash\;matter interactions.\nBIO:\nP
 eter Kraus is the group leader of the &ldquo\;High-harmonic generation and
  EUV science&rdquo\; team at ARCNL (https://arcnl.nl/research-groups/high-
 harmonic-generation-and-euv-science/group-memebers )\, and associate profe
 ssor of physics at the Vrije Universiteit Amsterdam. Since July 2024\, Pet
 er has also been part of the ARCNL management team as head of the metrolog
 y department. Peter&rsquo\;s research interests lie in developing extreme 
 ultraviolet (EUV) and highly nonlinear light sources from gas and solid-st
 ate high-harmonic generation\, and apply them for ultrafast spectroscopy a
 nd nanoscale metrology experiments with relevance to nanolithography. Prio
 r to joining ARCNL/VU in 2018 as group leader/assistant professor\, Peter 
 Kraus worked at the University of California\, Berkeley (USA) on the devel
 opment of new experimental techniques for investigating attosecond phenome
 na in solid-state materials. Peter obtained his PhD at ETH Zurich (Switzer
 land) in 2015. Here\, he developed and advanced the techniques of high har
 monic-spectroscopy for investigations of electronic and nuclear structure 
 and dynamics of molecular systems. His PhD thesis was awarded the ETH meda
 l for outstanding theses and the Justin Jankunkas award by the American Ph
 ysical society for the best thesis in chemical physics.Since starting at A
 RCNL\, Peter has obtained funding from the European Research Council (ERC 
 Starting grant 2022\, ERC Proof of Concept 2024)\, NWO domain ENW in the f
 orm of a Veni (2018)\, a Vidi (2023) and open competition M-2 (2023)\, as 
 well as funding from NWO domain TTW (Open Technology program\, in 2020 and
  2023).
DTSTAMP:20260416T070939Z
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