Frozen spatial coherence.

  title={Frozen spatial coherence.},
  author={Marc A. Pinto and P. A. Brand{\~a}o},
  journal={Optics letters},
  volume={47 12},
Inspired by the concept of coherent frozen waves, this paper introduces one possible theoretical framework of its partially coherent version, a frozen spatial coherence, in which a desired two-point correlation structure of an optical field is created on the propagation axis by superposing partially coherent zero-order Bessel beams. It is shown that the cross-spectral density can be given a description in terms of a two-dimensional Fourier series, analogous to the one-dimensional approach of… 

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