Colloquium

  • From Coherent to Ghost Imaging at Synchrotron and Free-Electron Laser Sources

  • Speaker : Ivan Vartaniants
    Affiliation : Deutsches Elektronen-Synchrotron (DESY)
    Date : April 10, 2019 4:00 PM
    Place : Bldg.110 Room N103
    Contact : noejung@unist.ac.kr
    Host : 박노정(Noejung Park)
  • Abstract

  • In my talk I will start from the basics of coherent x-ray diffractive measurements (CXDI) and will present recent results of the catalytic reaction studied by CXDI at ID01 beamline at ESRF. Next, I will show results of the Single Particle Imaging (SPI) reconstruction of the 70 nm virus obtained in the frame of the SPI consortium collaboration at LCLS [1].
    Then, I will present results of Hanbury Brown and Twiss interferometry performed at different X-ray Free-Electron Lasers (XFELs) [2-4] and will finish my presentation by the results of Ghost Imaging experiment performed at FLASH FEL at DESY.

    References:
    [1] M. Rose et al., ”Single-particle imaging without symmetry constraints at an X-ray free-electron laser”, IUCrJ 5, 727-736 (2018).
    [2] A. Singer et al., ”Hanbury Brown–Twiss Interferometry at a Free-Electron Laser” Phys. Rev. Lett. 111, 034802 (2013).
    [3] O. Gorobtsov et al., ”Diffraction based Hanbury Brown and Twiss interferometry at a hard x-ray free-electron laser” Scientific Reports 8, 2219 (2018).
    [4] O. Gorobtsov et al., ”Seeded X-ray free-electron laser generating radiation with laser statistical properties”, Nature Communications, 9, 4498 (2018).
    [5] Y-Y. Kim et al., ”Ghost Imaging at an XUV Free-Electron Laser”, (in review) (see arXive: https://arxiv.org/abs/1811.06855).