Laboratory Demonstration of Spatial-Coherence Analysis of a Blackbody through an Up-Conversion Interferometer
| Autor: | Wolfgang Sohler, Laurent Delage, Laurent Bouyeron, Damien Ceus, H. Herrmann, Ludovic Grossard, Jean-Thomas Gomes, Romain Baudoin, François Reynaud |
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| Přispěvatelé: | PHOTONIQUE (XLIM-PHOTONIQUE), XLIM (XLIM), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), Angewandte Physik, Universität Paderborn (UPB) |
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Physics
business.industry Infrared Lithium niobate Intensity interferometer Astrophysics::Instrumentation and Methods for Astrophysics General Physics and Astronomy Physics::Optics Photon counting law.invention Telescope chemistry.chemical_compound Interferometry Optics chemistry law Astronomical interferometer [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic Optoelectronics Black-body radiation business |
| Zdroj: | Physical Review Letters Physical Review Letters, American Physical Society, 2014, 112, pp.143904. ⟨10.1103/PhysRevLett.112.143904⟩ |
| ISSN: | 0031-9007 1079-7114 |
| DOI: | 10.1103/PhysRevLett.112.143904⟩ |
| Popis: | International audience; 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. |
| Databáze: | OpenAIRE |
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