Journal article ยท Preprint article
Coherent imaging of a pure phase object with classical incoherent light
By using the ghost imaging technique, we experimentally demonstrate the reconstruction of the diffraction pattern of a {\em pure phase} object by using the classical correlation of incoherent thermal light split on a beam splitter. The results once again underline that entanglement is not a necessary feature of ghost imaging.
The light we use is spatially highly incoherent with respect to the object ($\approx 2 \mu$m speckle size) and is produced by a pseudo-thermal source relying on the principle of near-field scattering. We show that in these conditions no information on the phase object can be retrieved by only measuring the light that passed through it, neither in a direct measurement nor in a Hanbury Brown-Twiss (HBT) scheme.
In general, we show a remarkable complementarity between ghost imaging and the HBT scheme when dealing with a phase object.
Language: | English |
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Publisher: | American Physical Society (APS) |
Year: | 2006 |
Pages: | 13 |
ISSN: | 10941622 and 10502947 |
Types: | Journal article and Preprint article |
DOI: | 10.1103/PhysRevA.73.053802 |