The Rayleigh diffraction bound sets the minimum separation for two point objects to be distinguishable in a conventional imaging system. We demonstrate sub-Rayleigh resolution by scanning a focused beam-in an arbitrary, object-covering pattern that is unknown to the imager-and using N-photon photodetection implemented with a single-photon avalanche detector array. Experiments show resolution improvement by a factor similar to(N - (N) over bar (max))(1/2) beyond the Rayleigh bound, where (N) over bar (max) is the maximum average detected photon number in the image, in good agreement with theory.

Sub-Rayleigh Imaging via N-Photon Detection

MACCONE, LORENZO;
2010-01-01

Abstract

The Rayleigh diffraction bound sets the minimum separation for two point objects to be distinguishable in a conventional imaging system. We demonstrate sub-Rayleigh resolution by scanning a focused beam-in an arbitrary, object-covering pattern that is unknown to the imager-and using N-photon photodetection implemented with a single-photon avalanche detector array. Experiments show resolution improvement by a factor similar to(N - (N) over bar (max))(1/2) beyond the Rayleigh bound, where (N) over bar (max) is the maximum average detected photon number in the image, in good agreement with theory.
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11571/220405
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 60
  • ???jsp.display-item.citation.isi??? 49
social impact