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Sparse superresolution phase retrieval from phase-coded noisy intensity patterns

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Yksityiskohdat

AlkuperäiskieliEnglanti
Artikkeli094103
JulkaisuOptical Engineering
Vuosikerta56
Numero9
DOI - pysyväislinkit
TilaJulkaistu - 1 syyskuuta 2017
OKM-julkaisutyyppiA1 Alkuperäisartikkeli

Tiivistelmä

We consider a computational superresolution inverse diffraction problem for phase retrieval from phase-coded intensity observations. The optical setup includes a thin lens and a spatial light modulator for phase coding. The designed algorithm is targeted on an optimal solution for Poissonian noisy observations. One of the essential instruments of this design is a complex-domain sparsity applied for complex-valued object (phase and amplitude) to be reconstructed. Simulation experiments demonstrate that good quality imaging can be achieved for high-level of the superresolution with a factor of 32, which means that the pixel of the reconstructed object is 32 times smaller than the sensor's pixel. This superresolution corresponds to the object pixel as small as a quarter of the wavelength.

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