Please use this identifier to cite or link to this item: http://cio.repositorioinstitucional.mx/jspui/handle/1002/478
Fourier Transform Demodulation of Pixelated Phase-Masked Interferograms
MANUEL SERVIN GUIRADO
JULIO CESAR ESTRADA RICO
ORLANDO MIGUEL MEDINA CAZARES
Acceso Abierto
Atribución-NoComercial-SinDerivadas
Recently a new type of spatial phase shifting interferometer was proposed that uses a phase-mask over the camera’s pixels. This new interferometer allows one to phase modulate each pixel independently by setting the angle of a linear polarizer built in contact over the camera’s CCD. In this way neighbor pixels may have any desired (however fixed) phase shift without cross taking. The standard manufacturing of these interferometers uses a 2x2 array with phase-shifts of 0, π/2, π, and 3π/2 radians. This 2x2 array is tiled all over the video camera’s CCD. In this paper we propose a new way to phase demodulate these phase-masked interferograms using the squeezing phase-shifting technique. A notable advantage of this squeezing technique is that it allows one the use of Fourier interferometry wiping out the detuning error that most phase shifting algorithms suffers. Finally we suggest the use of an alternative phase-mask to phase modulate the camera’s pixels using a linear spatial carrier al
19-07-2010
Artículo
CIENCIAS FÍSICO MATEMÁTICAS Y CIENCIAS DE LA TIERRA
Appears in Collections:Articulos Arbitrados 2010

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