Počet záznamů: 1  

Spatial and spectral coherence in propagating high-intensity twin beams

  1. 1.
    0451759 - FZU-D 2017 RIV GB eng J - Článek v odborném periodiku
    Haderka, O. - Machulka, R. - Peřina ml., Jan - Allevi, A. - Bondani, M.
    Spatial and spectral coherence in propagating high-intensity twin beams.
    Scientific Reports. Roč. 5, Sep (2015), s. 14365. ISSN 2045-2322
    Grant CEP: GA ČR GAP205/12/0382
    Institucionální podpora: RVO:68378271
    Klíčová slova: spatial and spectral coherence * high-intensity twin beams
    Kód oboru RIV: BH - Optika, masery a lasery
    Impakt faktor: 5.228, rok: 2015

    Spatial and spectral coherence of high-intensity twin-beam states propagating from the near-field to the far-field configurations is experimentally investigated by measuring intensity auto-and cross-correlation functions. The experimental setup includes a moving crystal and an iCCD camera placed at the output plane of an imaging spectrometer. Evolution from the tight near-field spatial position cross-correlations to the far-field momentum cross-correlations, accompanied by changeless spectral cross-correlations, is observed. Intensity autocorrelation functions and beam profiles are also monitored as they provide the number of degrees of freedom constituting the down-converted beams. The strength of intensity cross-correlations as an alternative quantity for the determination of the number of degrees of freedom is also measured. The relation between the beam coherence and the number of degrees of freedom is discussed.
    Trvalý link: http://hdl.handle.net/11104/0252856