Obtaining the wavefront phase maps of free form surfaces: using the least squares algorithm

Brenda Villalobos Mendoza, Daniel Aguirre-Aguirre

Producción científica

Resumen

In this work is presented the validation of the least squares algorithm proposed by Morgan (1982) and Greivenkamp (1984), to obtain the wavefront phase maps of a free form surface. The validation was made by simulating the synthetic interferograms of a free form surface using a Bessel function, each interferogram was simulated with a phase-shifting of π/20. This algorithm is applied to the experimental interferograms that are obtained in a Twyman-Green interferometer where the phase shifting is achieved by using a SLM (Spatial Light Modulator) that is placed in one of its arms; the phase shifts are achieved by displaying all the gray levels from 0 to 255 in the SLM. The phase shifts that are performed in this experimental setup are lower than π/4, therefore the conventional algorithms cannot be applied.

Idioma originalEnglish
Título de la publicación alojadaJournal of Physics: Conference Series
Volumen582
Edición1
DOI
EstadoPublished - 14 ene 2015

Serie de la publicación

NombreJournal of Physics: Conference Series
EditorialIOP Publishing Ltd.
ISSN (versión impresa)1742-6588

All Science Journal Classification (ASJC) codes

  • Física y Astronomía General

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