Time-resolved imaging by multiplexed ptychography (TIMP)

Ultrahigh-speed imaging is essential for many applications in science, engineering and clinical diagnostics. In particular, it is critical for observing ultrafast non-repetitive events, for which the pump-probe technique is inapplicable. We develop a conceptually new approach for ultrahigh-speed imaging, which we term Time-Resolved by Multiplexed Ptychography (TIMP) [1]. In TIMP, time-resolved complex-valued multiple frames of the object are recovered algorithmically from the data measured in a single CCD exposure of a ptychographic imaging system. This ‘magic’ is possible due to: i) the inherent large redundancy in ptychographic data and ii) our recent proposition and experimental demonstration of single-shot ptychography [2].


  1. P. Sidorenko and O. Cohen, Single-shot ptychography, Optica, 3, 9 (2016)
  2. P. Sidorenko, O. Lahav and O. Cohen, Ptychographic ultrahigh-speed imaging, Optics Express, 25, 10997 (2017)
  3. B. K. Chen, P. Sidorenko, O. Lahav, O. Peleg and O. Cohen, Multiplexed single-shot ptychography, Optics letters, 43, 5379 (2018)
  4. O. Wengrowicz, O. Peleg, B. Loevsky, B.K. Chen, G.Ilan Haham, S. Sainadh Undurti and O. Cohen, Experimental Time-Resolved Imaging by Multiplexed Ptychography, Optics Express, 27, 24568 (2019)
  5. G. Ilan Haham, O. Peleg, P. Sidorenko, and O. Cohen, High-resolution (diffraction-limited) single-shot multiplexed coded-aperture ptychographyJ. Opt., 22, 075608 (2020)
  6. O. Wengrowicz, O. Peleg, T. Zahavy, B. Loevsky, and O. Cohen, Deep neural networks in single-shot ptychographyOpt. Express 28, 17511 (2020)

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