RT Journal Article
T1 Two-step self-tuning phase-shifting interferometry
A1 Quiroga Mellado, Juan Antonio
A1 Vargas Balbuena, Javier
A1 Belenguer Dávila, Tomás
A1 Servín Guirado, Manuel
A1 Estrada, Julio César
AB A two-step self-tuning phase-shifting method is presented. The phase-step between the two interferograms is not known when the experiment is performed. Our demodulating method finds, in a robust way, this unknown phase-step. Once the phase-step is estimated we proceed to phase demodulate the interferograms. Moreover our method only requires the fringe patterns to have a constant unknown phase-shift between them. As a consequence, this technique can be used to demodulate open and closed-fringed patterns without phase-sign ambiguity. The method may be regarded as a self-tuning quadrature filter, which determines the phase-shift between the two fringe patterns and finally estimates the demodulated phase map. The proposed technique has been tested with simulated and real interferograms obtaining satisfactory results.
PB The Optical Society Of America
SN 1094-4087
YR 2011
FD 2011-01-11
LK https://hdl.handle.net/20.500.14352/43957
UL https://hdl.handle.net/20.500.14352/43957
LA eng
NO © 2011 Optical Society of America
DS Docta Complutense
RD 7 abr 2025