We analyze and recover, by means of spatial intensity correlations, the image obtained by a seeded frequency-downconversion process in which the seed field is chaotic and an intensity modulation is encoded in the pump field. Although the field generated is as chaotic as the seed field and does not carry any information about the modulation of the pump, one can extract an image of the pump by measuring the spatial intensity correlations between the generated field and one Fourier component of the seed.
© 2005 Optical Society of America
(070.4340) Fourier optics and signal processing : Nonlinear optical signal processing
(090.0090) Holography : Holography
(190.0190) Nonlinear optics : Nonlinear optics
(270.0270) Quantum optics : Quantum optics
Emiliano Puddu, Alessia Allevi, Alessandra Andreoni, and Maria Bondani, "Chaotic imaging in frequency downconversion," Opt. Lett. 30, 1294-1296 (2005)