Título:
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Two-step self-tuning phase-shifting interferometry
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Autores:
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Quiroga Mellado, Juan Antonio ;
Vargas, Javier ;
Belenguer Dávila, Tomás ;
Servín Guirado, Manuel ;
Estrada, Julio César
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Tipo de documento:
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texto impreso
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Editorial:
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The Optical Society Of America, 2011-01-11
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Optica
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Tipo = Artículo
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Resumen:
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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.
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En línea:
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https://eprints.ucm.es/id/eprint/22727/1/QuirogaJA16.pdf
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