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Accueil > Équipes > OPTique et IMAgerie > Photonique micro-ondes et auto-imagerie

Talbot effect and self-imaging

publié le , mis à jour le

Côme Schnébelin, Hugues Guillet de Chatellus
Collaboration : José Azaña (INRS Montréal)

PNG

Presentation :

An important research focus of the team is related to the temporal Talbot effect in the frequency shifting loops. By associating the concepts of space-time duality and duality of the direct space into the Fourier space, we have demonstrated the Talbot effect for spatial frequencies ("angular Talbot effect"). We are currently working on two-dimensional auto-imaging and have recently demonstrated the concept of passive coherent image amplification, in collaboration with the INRS of Montreal. More recently, we have reinterpreted the Talbot effect in terms of fractional Fourier transform. We have also proposed a new interpretation of the phenomena of "self-healing", in terms of spectral filtering, with applications in temporal optics, for the generation of arbitrary signals.

References :

  • L. Romero Cortés, R. Maram, H. Guillet de Chatellus, and J. Azaña, Subnoise detection and passive amplification of frequency combs through customized coherent spectral-energy redistribution, Phys. Rev. Applied, accepted (2018).
  • C. Schnébelin, and H. Guillet de Chatellus, Fractional Fourier transform-based description of the Talbot effect : application to analog signal processing, Opt. Lett. 43, 1467-1470 (2018).
  • H. Guillet de Chatellus, L. Romero Cortés, M. Seghilani, A. Deville, and J. Azaña, Diffraction-induced bidimensional Talbot self-imaging with full independent period control, Phys. Rev. Lett. 118, 133903 (2017).
  • C. Schnébelin, and H. Guillet de Chatellus, Fractional Fourier transform-based description of the Talbot effect : application to analog signal processing, Appl. Opt. 56, 62 (2017).
  • L. Romero Cortés, H. Guillet de Chatellus, and J. Azaña, On the generality of the Talbot condition for inducing self-imaging effects on periodic objects through the application of quadratic phases, Opt. Lett. 41, 340 (2016).
  • H. Guillet de Chatellus, E. Lacot, O. Hugon, O. Jacquin, N. Khebbache, J. Azaña, Phases of Talbot images in angular Talbot effect, JOSA A, 32, 1132 (2015).
  • J. Azaña, and H. Guillet de Chatellus, Angular Talbot effects, Phys. Rev. Lett. 112, 213902 (2014).