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@ARTICLE{Negi:626387,
      author       = {Negi, Ankita and Lohse, Leon Merten and Velten, Sven and
                      Sergeev, Ilya and Leupold, Olaf and Sadashivaiah, Sakshath
                      and Bessas, Dimitrios and Chumakov, Aleksandr and Brandt,
                      Christina and Bocklage, Lars and Meier, Guido and
                      Roehlsberger, Ralf},
      title        = {{E}nergy {T}ime {P}tychography for one-dimensional {P}hase
                      {R}etrieval},
      journal      = {Optica},
      volume       = {12},
      number       = {9},
      issn         = {2334-2536},
      address      = {Washington, DC},
      publisher    = {Optica},
      reportid     = {PUBDB-2025-01379},
      pages        = {1529 - 1538},
      year         = {2025},
      note         = {This article has been published.},
      abstract     = {Phase retrieval is at the heart of adaptive optics and
                      modern high-resolution imaging. Without phase information,
                      optical systems are limited to intensity-only measurements,
                      hindering full reconstruction of object structures and
                      wavefront dynamics essential for advanced applications.
                      Here, we address a one-dimensional phase problem linking
                      energy and time, which arises in X-ray scattering from
                      ultrasharp nuclear resonances. We leverage the Mössbauer
                      effect, where nuclei scatter radiation without energy loss
                      to the lattice and are sensitive to their magneto-chemical
                      environments. Rather than using traditional spectroscopy
                      with radioactive gamma-ray sources, we measure nuclear
                      forward scattering of synchrotron X-ray pulses in the time
                      domain, providing superior sensitivity and faster data
                      acquisition. Extracting spectral information from a single
                      measurement is challenging due to the missing phase
                      information, typically requiring extensive modeling.
                      Instead, we use multiple energetically overlapping
                      measurements to retrieve both the transmission spectrum and
                      the phase of the scattering response, similar to
                      ptychographic phase retrieval in imaging. Our robust
                      approach can overcome the bandwidth limitations of gamma-ray
                      sources, opening new research directions, to the best of our
                      knowledge, with modern X-ray sources and Mössbauer
                      isotopes.},
      cin          = {FS-PS / FS-PET-S},
      ddc          = {620},
      cid          = {I:(DE-H253)FS-PS-20131107 / I:(DE-H253)FS-PET-S-20190712},
      pnm          = {631 - Matter – Dynamics, Mechanisms and Control
                      (POF4-631) / 6G3 - PETRA III (DESY) (POF4-6G3) / HIDSS-0002
                      - DASHH: Data Science in Hamburg - Helmholtz Graduate School
                      for the Structure of Matter $(2019_IVF-HIDSS-0002)$ / AIM,
                      DFG project G:(GEPRIS)390715994 - EXC 2056: CUI: Advanced
                      Imaging of Matter (390715994) / FS-Proposal: I-20210761
                      (I-20210761)},
      pid          = {G:(DE-HGF)POF4-631 / G:(DE-HGF)POF4-6G3 /
                      $G:(DE-HGF)2019_IVF-HIDSS-0002$ / G:(GEPRIS)390715994 /
                      G:(DE-H253)I-20210761},
      experiment   = {EXP:(DE-H253)P-P01-20150101},
      typ          = {PUB:(DE-HGF)16},
      doi          = {10.1364/OPTICA.568949},
      url          = {https://bib-pubdb1.desy.de/record/626387},
}