An iterative phase retrieval method is proposed, which uses a sequence of diffraction intensity patterns recorded at different wavelengths. This method has a rapid convergence, and a high immunity to noise and environmental disturbance. The wrap-free phase measurement range is also extended based on the principle of two-wavelength interferometry. Simulation and experimental results are presented to demonstrate the approach.
© 2008 Optical Society of America
Original Manuscript: October 1, 2007
Revised Manuscript: December 17, 2007
Manuscript Accepted: December 19, 2007
Published: February 6, 2008
Vol. 3, Iss. 3 Virtual Journal for Biomedical Optics
Peng Bao, Fucai Zhang, Giancarlo Pedrini, and Wolfgang Osten, "Phase retrieval using multiple illumination wavelengths," Opt. Lett. 33, 309-311 (2008)