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Single-shot large field of view Fourier transform holography with a picosecond plasma-based soft X-ray laser.

  • Author(s): Wang, Shoujun;
  • Rockwood, Alex;
  • Wang, Yong;
  • Chao, Wei-Lun;
  • Naulleau, Patrick;
  • Song, Huanyu;
  • Menoni, Carmen S;
  • Marconi, Mario;
  • Rocca, Jorge J
  • et al.

Published Web Location

https://doi.org/10.1364/oe.409815
Abstract

It is challenging to obtain nanoscale resolution images in a single ultrafast shot because a large number of photons, greater than 1011, are required in a single pulse of the illuminating source. We demonstrate single-shot high resolution Fourier transform holography over a broad 7 µm diameter field of view with ∼ 5 ps temporal resolution. The experiment used a plasma-based soft X-ray laser operating at 18.9 nm wavelength with nearly full spatial coherence and close to diffraction-limited divergence implemented utilizing a dual-plasma amplifier scheme. A Fresnel zone plate with a central aperture is used to efficiently generate the object and reference beams. Rapid numerical reconstruction by a 2D Fourier transform allows for real-time imaging. A half-pitch spatial resolution of 62 nm was obtained. This single-shot nanoscale-resolution imaging technique will allow for real-time ultrafast imaging of dynamic phenomena in compact setups.

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