Two-Photon Time Correlations in Diverging Spatially Coherent Light

  • Donald Scarl
  • Sigrid McAfee
Conference paper


We have measured the time correlation of pairs of photons from a neon discharge source limited by a 2 micrometer diameter aperture. [1] Light from this small source aperture is coherent over a wide range of angles so that the second order correlation function shows an excess counting rate (the Hanbury Brown-Twiss effect) over a wide range of propagation directions. This geometry allows the measured two-photon counting rate to be compared with the predictions of a maximum entropy density matrix over a wider range of angles than was previously possible.


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Copyright information

© Springer Science+Business Media New York 1978

Authors and Affiliations

  • Donald Scarl
    • 1
  • Sigrid McAfee
    • 1
  1. 1.Polytechnic Institute of New YorkFarmingdaleUSA

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