Laboratory Demonstration of Spatial-Coherence Analysis of a Blackbody through an Up-Conversion Interferometer - Archive ouverte HAL Access content directly
Journal Articles Physical Review Letters Year : 2014

Laboratory Demonstration of Spatial-Coherence Analysis of a Blackbody through an Up-Conversion Interferometer

Jean-Thomas Gomes
  • Function : Author
  • PersonId : 923719
Laurent Delage
Romain Baudoin
  • Function : Author
  • PersonId : 938693
Ludovic Grossard
Laurent Bouyeron
  • Function : Author
  • PersonId : 918088
Damien Ceus
  • Function : Author
  • PersonId : 914219
François Reynaud
Harrald Herrmann
  • Function : Author
  • PersonId : 929894

Abstract

In the field of high resolution imaging in astronomy, we experimentally demonstrate the spatial-coherence analysis of a blackbody using an up-conversion interferometer in the photon counting regime. The infrared radiation of the blackbody is converted to a visible one in both arms of the interferometer thanks to the sum-frequency generation processes achieved in Ti-diffused periodically poled lithium niobate waveguides. The coherence analysis is performed through a dedicated imaging stage which mimics a classical telescope array analyzing an astrophysical source. The validity of these measurements is confirmed by the comparison with spatial-coherence analysis through a reference interferometer working at infrared wavelengths.
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Dates and versions

hal-01321019 , version 1 (24-05-2016)

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Jean-Thomas Gomes, Laurent Delage, Romain Baudoin, Ludovic Grossard, Laurent Bouyeron, et al.. Laboratory Demonstration of Spatial-Coherence Analysis of a Blackbody through an Up-Conversion Interferometer . Physical Review Letters, 2014, 112, pp.143904. ⟨10.1103/PhysRevLett.112.143904⟩. ⟨hal-01321019⟩

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