info:eu-repo/semantics/article
Vortex-enhanced coherent-illumination phase diversity for phase retrieval in coherent imaging systems
Fecha
2016-04-15Registro en:
01469592
15394794
WOS;000374391900033
PUBMED;27082353
SCOPUS;2-s2.0-84964447106
10.1364/OL.41.001817
Autor
Echeverri-Chacón, S.
Restrepo, R.
Cuartas-Vélez, C.
Uribe-Patarroyo, N.
Institución
Resumen
We propose a phase-retrieval method based on the numerical optimization of a new objective function using coherent phase-diversity images as inputs for the characterization of aberrations in coherent imaging systems. By employing a spatial light modulator to generate multiple-order spiral phase masks as diversities, we obtain an increase in the accuracy of the retrieved phase compared with similar state-of-the-art phase-retrieval techniques that use the same number of input images. We present simulations that show a consistent advantage of our technique, and experimental validation where our implementation is used to characterize a highly aberrated 4F optical system. (C) 2016 Optical Society of America