Phase recovery from a single interferogram with closed fringes by phase unwrapping

Journal Article · Sat Jan 01 00:00:00 EST 2011 · Applied Optics

DOI:https://doi.org/10.1364/AO.50.000022· OSTI ID:22036563

Munoz-Maciel, Jesus; Casillas-Rodriguez, Francisco J; Mora-Gonzalez, Miguel; Pena-Lecona, Francisco G; Duran-Ramirez, Victor M; Gomez-Rosas, Gilberto

We describe a new algorithm for phase determination from a single interferogram with closed fringes based on an unwrapping procedure. Here we use bandpass filtering in the Fourier domain, obtaining two wrapped phases with sign changes corresponding to the orientation of the applied filters. An unwrapping scheme that corrects the sign ambiguities by comparing the local derivatives is then proposed. This can be done, assuming that the phase derivatives do not change abruptly among adjacent areas as occurs with smooth continuous phase maps. The proposed algorithm works fast and is robust against noise, as demonstrated in experimental and simulated data.

• OSTI ID: 22036563
• Journal Information: Applied Optics, Vol. 50, Issue 1; Other Information: (c) 2010 Optical Society of America; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6935
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALGORITHMS
FILTERS
FOURIER ANALYSIS
INTERFERENCE
NOISE
SIMULATION