Prospects for x-ray holography with free-electron lasers

@inproceedings{Solem1990ProspectsFX,
  title={Prospects for x-ray holography with free-electron lasers},
  author={Johndale C. Solem and Keith Boyer and Waleed Haddad and Charles K. Rhodes},
  booktitle={Photonics West - Lasers and Applications in Science and Engineering},
  year={1990}
}
We review the technical advantages offered by x-ray holographic microscopy for imaging the structure of living biological specimens. We discuss the wavelength, coherence, energy, and pulse-length requirements and conclude that these could be met by free-electron laser architectures of the near future. We also show that Fourier-transform holography using a reference scattering sphere is the best optical configuration for a practical instrument. 
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It is shown that the control of the propagation is the key factor that enables high levels of amplification in the kilovolt regime to be achieved with a total excitation energy of ~1 J.
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