Phase retrieval using multiple illumination wavelengths.
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.
Bao
Peng
P
Institut für Technische Optik, Universität Stuttgart, Pfaffenwaldring 9, 70569 Stuttgart, Germany.
Zhang
Fucai
F
Pedrini
Giancarlo
G
Osten
Wolfgang
W
D000465:Algorithms; D007089:Image Enhancement / Q000379:methods; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D008029:Lighting / Q000379:methods*; D008858:Microscopy, Phase-Contrast / Q000379:methods*; D010783:Photometry / Q000379:methods*; D012031:Refractometry / Q000379:methods*