Correction of aberrations in an optical correlator by using it as a point diffraction interferometer

In VanderLugt type correlators, the input scene and the filter could be implemented onto twisted liquid crystal displays (LCD's). The modulator used to display the scene and the elements placed before the filter usually introduce phase aberrations. These aberrations have an important influence...

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Autores principales: Iemmi, C., Moreno, A., Nicolás, J., Campos, J.
Formato: CONF
Materias:
Interferometry
Optical Correlators
Phase Measurement
Fourier transforms
Image processing
Interferometers
Light propagation
Liquid crystal displays
Optical filters
Phase measurement
Diffraction interferometers
Optical correlators
Phase contrast microscopes
Phase distribution
Optical systems
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_0277786X_v5457_n_p589_Iemmi
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_0277786X_v5457_n_p589_Iemmi
record_format dspace
spelling todo:paper_0277786X_v5457_n_p589_Iemmi2023-10-03T15:16:27Z Correction of aberrations in an optical correlator by using it as a point diffraction interferometer Iemmi, C. Moreno, A. Nicolás, J. Campos, J. Interferometry Optical Correlators Phase Measurement Fourier transforms Image processing Interferometers Light propagation Liquid crystal displays Optical filters Phase measurement Diffraction interferometers Optical correlators Phase contrast microscopes Phase distribution Optical systems In VanderLugt type correlators, the input scene and the filter could be implemented onto twisted liquid crystal displays (LCD's). The modulator used to display the scene and the elements placed before the filter usually introduce phase aberrations. These aberrations have an important influence in the final correlation plane. We propose a new method to evaluate and correct in situ these aberrations by using the correlator as a point diffraction interferometer. In this work, the wave front phase distribution evaluation is performed by means of the phase shift interferometry (PSI) technique. We present the theory on which the method is based and the experimental results obtained by applying it in a convergent correlator. Fil:Iemmi, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. CONF info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_0277786X_v5457_n_p589_Iemmi
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Interferometry
Optical Correlators
Phase Measurement
Fourier transforms
Image processing
Interferometers
Light propagation
Liquid crystal displays
Optical filters
Phase measurement
Diffraction interferometers
Optical correlators
Phase contrast microscopes
Phase distribution
Optical systems
spellingShingle Interferometry
Optical Correlators
Phase Measurement
Fourier transforms
Image processing
Interferometers
Light propagation
Liquid crystal displays
Optical filters
Phase measurement
Diffraction interferometers
Optical correlators
Phase contrast microscopes
Phase distribution
Optical systems
Iemmi, C.
Moreno, A.
Nicolás, J.
Campos, J.
Correction of aberrations in an optical correlator by using it as a point diffraction interferometer
topic_facet Interferometry
Optical Correlators
Phase Measurement
Fourier transforms
Image processing
Interferometers
Light propagation
Liquid crystal displays
Optical filters
Phase measurement
Diffraction interferometers
Optical correlators
Phase contrast microscopes
Phase distribution
Optical systems
description In VanderLugt type correlators, the input scene and the filter could be implemented onto twisted liquid crystal displays (LCD's). The modulator used to display the scene and the elements placed before the filter usually introduce phase aberrations. These aberrations have an important influence in the final correlation plane. We propose a new method to evaluate and correct in situ these aberrations by using the correlator as a point diffraction interferometer. In this work, the wave front phase distribution evaluation is performed by means of the phase shift interferometry (PSI) technique. We present the theory on which the method is based and the experimental results obtained by applying it in a convergent correlator.
format CONF
author Iemmi, C.
Moreno, A.
Nicolás, J.
Campos, J.
author_facet Iemmi, C.
Moreno, A.
Nicolás, J.
Campos, J.
author_sort Iemmi, C.
title Correction of aberrations in an optical correlator by using it as a point diffraction interferometer
title_short Correction of aberrations in an optical correlator by using it as a point diffraction interferometer
title_full Correction of aberrations in an optical correlator by using it as a point diffraction interferometer
title_fullStr Correction of aberrations in an optical correlator by using it as a point diffraction interferometer
title_full_unstemmed Correction of aberrations in an optical correlator by using it as a point diffraction interferometer
title_sort correction of aberrations in an optical correlator by using it as a point diffraction interferometer
url http://hdl.handle.net/20.500.12110/paper_0277786X_v5457_n_p589_Iemmi
work_keys_str_mv AT iemmic correctionofaberrationsinanopticalcorrelatorbyusingitasapointdiffractioninterferometer
AT morenoa correctionofaberrationsinanopticalcorrelatorbyusingitasapointdiffractioninterferometer
AT nicolasj correctionofaberrationsinanopticalcorrelatorbyusingitasapointdiffractioninterferometer
AT camposj correctionofaberrationsinanopticalcorrelatorbyusingitasapointdiffractioninterferometer
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