Point diffraction interferometer with a liquid crystal monopixel
In this work a novel point diffraction interferometer based on a variable liquid crystal wave plate (LCWP) has been implemented. The LCWP consists of a 3x3 cm2 monopixel cell with parallel alignment. The monopixel cell was manufactured such that the electrode covers the entire surface except in a ce...
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| Formato: | JOUR |
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_10944087_v21_n7_p8116_Ramirez |
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todo:paper_10944087_v21_n7_p8116_Ramirez2023-10-03T16:05:13Z Point diffraction interferometer with a liquid crystal monopixel Ramírez, C. Otón, E. Iemmi, C. Moreno, I. Bennis, N. Otón, J.M. Campos, J. Interferometers Liquid crystals Wavefronts Amplitude and phase distributions Different planes Digital holograms Fresnel diffraction integral Parallel alignments Phase-shifting technique Point diffraction interferometer Three-dimensional object Diffraction article chemistry electromagnetic field equipment equipment design equipment failure interferometry liquid crystal radiation exposure refractometry signal processing Electromagnetic Fields Equipment Design Equipment Failure Analysis Interferometry Liquid Crystals Refractometry Signal Processing, Computer-Assisted In this work a novel point diffraction interferometer based on a variable liquid crystal wave plate (LCWP) has been implemented. The LCWP consists of a 3x3 cm2 monopixel cell with parallel alignment. The monopixel cell was manufactured such that the electrode covers the entire surface except in a centered circular area of 50 μm of diameter. This circle acts as a point perturbation which diffracts the incident wave front giving rise to a spherical reference wave. By applying a voltage to the LCWP we can change the phase of the wave front that passes through the monopixel, except at the center. Phase shifting techniques are used in order to calculate the amplitude and phase distribution of the object wave front. The system allows a digital hologram to be obtained, and by using the Fresnel diffraction integral it is possible to digitally reconstruct the different planes that constitute the three dimensional object. © 2013 Optical Society of America. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_10944087_v21_n7_p8116_Ramirez |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Interferometers Liquid crystals Wavefronts Amplitude and phase distributions Different planes Digital holograms Fresnel diffraction integral Parallel alignments Phase-shifting technique Point diffraction interferometer Three-dimensional object Diffraction article chemistry electromagnetic field equipment equipment design equipment failure interferometry liquid crystal radiation exposure refractometry signal processing Electromagnetic Fields Equipment Design Equipment Failure Analysis Interferometry Liquid Crystals Refractometry Signal Processing, Computer-Assisted |
| spellingShingle |
Interferometers Liquid crystals Wavefronts Amplitude and phase distributions Different planes Digital holograms Fresnel diffraction integral Parallel alignments Phase-shifting technique Point diffraction interferometer Three-dimensional object Diffraction article chemistry electromagnetic field equipment equipment design equipment failure interferometry liquid crystal radiation exposure refractometry signal processing Electromagnetic Fields Equipment Design Equipment Failure Analysis Interferometry Liquid Crystals Refractometry Signal Processing, Computer-Assisted Ramírez, C. Otón, E. Iemmi, C. Moreno, I. Bennis, N. Otón, J.M. Campos, J. Point diffraction interferometer with a liquid crystal monopixel |
| topic_facet |
Interferometers Liquid crystals Wavefronts Amplitude and phase distributions Different planes Digital holograms Fresnel diffraction integral Parallel alignments Phase-shifting technique Point diffraction interferometer Three-dimensional object Diffraction article chemistry electromagnetic field equipment equipment design equipment failure interferometry liquid crystal radiation exposure refractometry signal processing Electromagnetic Fields Equipment Design Equipment Failure Analysis Interferometry Liquid Crystals Refractometry Signal Processing, Computer-Assisted |
| description |
In this work a novel point diffraction interferometer based on a variable liquid crystal wave plate (LCWP) has been implemented. The LCWP consists of a 3x3 cm2 monopixel cell with parallel alignment. The monopixel cell was manufactured such that the electrode covers the entire surface except in a centered circular area of 50 μm of diameter. This circle acts as a point perturbation which diffracts the incident wave front giving rise to a spherical reference wave. By applying a voltage to the LCWP we can change the phase of the wave front that passes through the monopixel, except at the center. Phase shifting techniques are used in order to calculate the amplitude and phase distribution of the object wave front. The system allows a digital hologram to be obtained, and by using the Fresnel diffraction integral it is possible to digitally reconstruct the different planes that constitute the three dimensional object. © 2013 Optical Society of America. |
| format |
JOUR |
| author |
Ramírez, C. Otón, E. Iemmi, C. Moreno, I. Bennis, N. Otón, J.M. Campos, J. |
| author_facet |
Ramírez, C. Otón, E. Iemmi, C. Moreno, I. Bennis, N. Otón, J.M. Campos, J. |
| author_sort |
Ramírez, C. |
| title |
Point diffraction interferometer with a liquid crystal monopixel |
| title_short |
Point diffraction interferometer with a liquid crystal monopixel |
| title_full |
Point diffraction interferometer with a liquid crystal monopixel |
| title_fullStr |
Point diffraction interferometer with a liquid crystal monopixel |
| title_full_unstemmed |
Point diffraction interferometer with a liquid crystal monopixel |
| title_sort |
point diffraction interferometer with a liquid crystal monopixel |
| url |
http://hdl.handle.net/20.500.12110/paper_10944087_v21_n7_p8116_Ramirez |
| work_keys_str_mv |
AT ramirezc pointdiffractioninterferometerwithaliquidcrystalmonopixel AT otone pointdiffractioninterferometerwithaliquidcrystalmonopixel AT iemmic pointdiffractioninterferometerwithaliquidcrystalmonopixel AT morenoi pointdiffractioninterferometerwithaliquidcrystalmonopixel AT bennisn pointdiffractioninterferometerwithaliquidcrystalmonopixel AT otonjm pointdiffractioninterferometerwithaliquidcrystalmonopixel AT camposj pointdiffractioninterferometerwithaliquidcrystalmonopixel |
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