Point diffraction interferometer with a liquid crystal monopixel

Ramírez, Claudio and Otón Martínez, Eva and Iemmi, Claudio and Moreno, Ignacio and Bennis, Noureddine and Otón Sánchez, José Manuel and Campos, Juan (2013). Point diffraction interferometer with a liquid crystal monopixel. "Optics Express", v. 21 (n. 7); pp. 8116-8124. ISSN 1094-4087. https://doi.org/10.1364/OE.21.008116.

Description

Title: Point diffraction interferometer with a liquid crystal monopixel
Author/s:
  • Ramírez, Claudio
  • Otón Martínez, Eva
  • Iemmi, Claudio
  • Moreno, Ignacio
  • Bennis, Noureddine
  • Otón Sánchez, José Manuel
  • Campos, Juan
Item Type: Article
Título de Revista/Publicación: Optics Express
Date: April 2013
ISSN: 1094-4087
Volume: 21
Subjects:
Faculty: E.T.S.I. Telecomunicación (UPM)
Department: Tecnología Fotónica [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

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.

More information

Item ID: 26846
DC Identifier: http://oa.upm.es/26846/
OAI Identifier: oai:oa.upm.es:26846
DOI: 10.1364/OE.21.008116
Official URL: http://www.opticsinfobase.org/oe/fulltext.cfm?uri=oe-21-7-8116&id=251705
Deposited by: Memoria Investigacion
Deposited on: 31 May 2014 09:37
Last Modified: 22 Sep 2014 11:43
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