• Record: found
  • Abstract: found
  • Article: found
Is Open Access

Optical Intensity Interferometry through Atmospheric Turbulence


Read this article at

      There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.


      Conventional ground-based astronomical observations suffer from image distortion due to atmospheric turbulence. This can be minimized by choosing suitable geographic locations or adaptive optical techniques, and avoided altogether by using orbital platforms outside the atmosphere. One of the promises of optical intensity interferometry is its independence from atmospherically induced phase fluctuations. By performing narrowband spectral filtering on sunlight and conducting temporal intensity interferometry using actively quenched avalanche photon detectors (APDs), the Solar \(g^{(2)}(\tau)\) signature was directly measured. We observe an averaged photon bunching signal of \(g^{(2)}(\tau) = 1.693 \pm 0.003\) from the Sun, consistently throughout the day despite fluctuating weather conditions, cloud cover and elevation angle. This demonstrates the robustness of the intensity interferometry technique against atmospheric turbulence and opto-mechanical instabilities, and the feasibility to implement measurement schemes with both large baselines and long integration times.

      Related collections

      Most cited references 1

      • Record: found
      • Abstract: not found
      • Article: not found

      The Calculation of Astronomical Refraction in Marine Navigation

       G G Bennett (1982)

        Author and article information



        Comment on this article