Development of a Digital Astronomical Intensity Interferometer: laboratory tests with thermal light
arXiv:1708.05708 · doi:10.1080/09500340.2017.1360958
Abstract
We present measurements of the second order spatial coherence function of thermal light sources using Hanbury-Brown and Twiss interferometry with a digital correlator. We demonstrate that intensity fluctuations between orthogonal polarizations, or at detector separations greater than the spatial coherence length of the source, are uncorrelated but can be used to reduce systematic noise. The work performed here can readily be applied to existing and future Imaging Air-Cherenkov Telescopes used as star light collectors for Stellar Intensity Interferometry (SII) to measure spatial properties of astronomical objects.
13 pages, 5 figures, Accepted into special issue of the Journal of Modern Optics
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Cited by in corpus (7)
- Demonstration of stellar intensity interferometry with the four VERITAS telescopes
- Spatial intensity interferometry on three bright stars
- A quantitative comparison of amplitude versus intensity interferometry for astronomy
- Optical long baseline intensity interferometry: prospects for stellar physics
- Towards a Polarisation Prediction for LISA via Intensity Interferometry
- Generation of N00N-like interferences with two thermal light sources
- Sirius: A Prototype Astronomical Intensity Interferometer Using Avalanche Photodiodes in Linear Mode