Faculté des sciences

## Correlations of light in the deep Fresnel region: An extended Van Cittert and Zernike theorem

### In: Physical Review A, 2007, vol. 75, no. 5, p. 053815

We derive an extension of the Van Cittert and Zernike theorem (VCZT), which holds very near to planar quasihomogeneous radiation sources. This derivation is based on paraxial propagation of the Wigner distribution function of the scalar field. We identify a critical distance from the source. Below this distance (deep Fresnel region) the field autocorrelation function is invariant upon propagation... More