Parallel spatial intensity correlations to decode random frequency-downconverted images (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• Parallel spatial intensity correlations to decode random frequency-downconverted images (Articolo in rivista) (literal)

Anno

• 2006-01-01T00:00:00+01:00 (literal)

Alternative label

• Andreoni, A; Puddu, E; Bondani, M (2006)
  Parallel spatial intensity correlations to decode random frequency-downconverted images
  
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Andreoni, A; Puddu, E; Bondani, M (literal)

Pagina inizio

• 125 (literal)

Pagina fine

• 129 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 85 (literal)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• Univ Insubria, Dipartimento Matemat & Fis, I-22100 Como, Italy; INFM, CNR, Natl Lab Ultrafast & Ultraintense Opt Sci, ULTRAS, I-22100 Como, Italy (literal)

Titolo

• Parallel spatial intensity correlations to decode random frequency-downconverted images (literal)

Abstract

• We record frequency-downconverted images that are chaotic, as they are obtained in a chi((2)) crystal from the interaction of two pulsed pseudo-thermal fields of which the one at the higher frequency encountered the imaged object. Spatial correlations of the intensity fluctuations in these chaotic images with the intensity of a single spatial Fourier component of the low-frequency input field, allow image retrieval if the number of records on which the ensemble-averages are calculated is suitably large. When it is too small to achieve a satisfactory result, we show that computing the correlations in parallel with different components of the low-frequency input field, shifting the correlation maps according to a rule suggested by 3D phase-matching, and averaging them, leads to the recovery of the downconverted image. The method can be used for secure and fast image transmission. (literal)

Prodotto di

• Fotonica ultrabreve dall'infrarosso al EUV: applicazioni a materiali e dispositivi per ICT, magnetismo, biomedicina e nanoscienze (MD.P03.008.001) (Modulo)

Autore CNR

• MARIA BONDANI (Persona)

Incoming links:

Autore CNR di

• MARIA BONDANI (Persona)

Prodotto

• Fotonica ultrabreve dall'infrarosso al EUV: applicazioni a materiali e dispositivi per ICT, magnetismo, biomedicina e nanoscienze (MD.P03.008.001) (Modulo)