Office Phone: (+30) 2810 391127
Lab Phone: (+30) 2810 391331
Email: ptzallas(AT)
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Dr. Tzallas Paraskevas
Research Director
Family Name, First Name : Tzallas Paraskevas
Researcher unique identifier: Paraskevas Tzallas on Google Scholar
Date of birth  : Grevena-Greece, Feb. 4, 1974.
Nationality: Hellenic
Office address : Foundation for Research and Technology - Hellas, Institute of Electronic Structure and Laser (FORTH-IESL), N. Plastira 100, Vassilika Vouton, 70013, Heraklion, Crete, Greece, Tel.: +30-81-391127, Fax: +30-81-391305, e-mail:

2017-now: Research Director (Researcher A') and board member of the scientific council of FORTH-IESL

2014-now: Senior Research fellow and Scientific Advisor at Extreme Light Infrastructure-Attosecond Light Pulse Source (ELI-ALPS), Szeged, Hungary

2002-2004: Post-Doc in MAX-PlANCK-INSTITUT FÜR QUANTENOPTIK in Garching (Germany)
2004-2017: Researcher D', Researcher C' and Principal Researcher (Researcher B') at FORTH-IESL
1992 (Oct.)-1996(July) : Diploma degree in Physics, Univ. of Ioannina-Greece
1996 (Oct.)-2002 (Jan.) : Post graduate student in AMO Physics lab. of Department of Physics of University of Ioannina in collaboration with Rutherford Appleton Laboratory (UK) and the Department of Physics and Astronomy, University of Glasgow, UK.
  • RESEARCH INTERESTS: Atomic, Molecular and Optical physics (AMO); Attosecond science and strong laser field physics; Quantum Optics in Strong laser field physics
    • First direct observation of attosecond light bursts emitted from gas and sold state media (Nature (2003); Nature Phys. (2009); APL Photonics (2019)).
    • First observation of atomic direct double ionization by harmonic superposition (Phys. Rev. A  (2006)).
    • Generation of intense continuum XUV radiation by multi-cycle laser fields (Nature Phys. (2007)).
    • XUV pump-XUV probe studies of 1-fs electron dynamics (Phys. Rev. Lett. (2010); Nature Phys. (2011); Phys. Rev. A (2014))
    • Time gated ion microscopy in the XUV spectral range (Phys. Rev. A (2014); Scientific Reports (2016); J. Opt. (2018)).
    • Generation of coherent XUV pulses with the highest ever photon flux (Phys. Rev. A (2018)).
    • Linking quantum optics with strong-laser-field physics (Scientific Reports (2016); Nature Commun. (2017); Phys. Rev. Lett. (2019)).
  • PUBLICATIONS IN INTERNATIONAL REFEREED JOURNALS: 71 published papers, including 1 Nature, 3 Nature Phys., 1 Nature Comm., 6 Phys. Rev. Lett., 1 Physics Reports, 12 Phys. Rev. A, 3 Optica, 1 Opt. Lett., 4 Sci. Rep., 5 New J. Phys., 6 J. Phys. B, 1 Optics Express, 2 Appl. Phys. B, 2 Chem. Phys. Lett., 2 J. Phys. Chem. A e.t.c., 5 chapters in books, and 5 Invited review/perspective articles in international scientific journals with ≈ 2500 citations, h-factor = 27 (database: Google Scholar).
  • TALKS IN CONFERENCES/UNIVERSITIES/INSTITUTES: 2 keynote, 31 invited and 15 oral
  • REFEREE IN INTERNATIONAL SCIENTIFIC JOURNALS: 1) Nature Photonics 2) Nature Communications 3) Physical Review Letters 4) Scientific Reports 5) Physical Review A 6) Optics Letters  7) New Journal of Physics  8) Optics Express 9) Journal of Physics B  10) Journal of Quantum Electronics 11) Applied Physics B.