Analysis of the fabrication of diffractive optical elements in photopolymers

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Title: Analysis of the fabrication of diffractive optical elements in photopolymers
Authors: Gallego, Sergi | Márquez, Andrés | Fernandez, Roberto | Piera, Álvaro | Martínez Guardiola, Francisco Javier | Ortuño, Manuel | Francés, Jorge | Beléndez, Augusto | Pascual, Inmaculada
Research Group/s: Holografía y Procesado Óptico
Center, Department or Service: Universidad de Alicante. Departamento de Física, Ingeniería de Sistemas y Teoría de la Señal | Universidad de Alicante. Departamento de Óptica, Farmacología y Anatomía | Universidad de Alicante. Instituto Universitario de Física Aplicada a las Ciencias y las Tecnologías
Keywords: Diffractive optical elements | Holographic recording materials | Photopolymers | Spatial light modulators
Knowledge Area: Óptica | Física Aplicada
Date Created: Jul-2013
Issue Date: 26-Sep-2013
Publisher: SPIE, The International Society for Optics and Photonics
Citation: S. Gallego ; A. Márquez ; R. Fernández ; Á. Piera ; F. J. Martínez ; M. Ortuño ; J. Francés ; A. Beléndez and I. Pascual "Analysis of the fabrication of diffractive optical elements in photopolymers", Proc. SPIE 8855, Optics and Photonics for Information Processing VII, 88550V (September 26, 2013); doi:10.1117/12.2023861;
Abstract: Recently the possibility to record phase diffractive optical elements (DOEs) onto photopolymers has been explored. Two of their properties when they are illuminated are useful to this goal: the relief surface changes and the refractive index modifications. The recording intensity distribution with a sinusoidal profile is the easiest profile to record in a holographic recording material, i.e. it can be obtained by the simple interference of two plane wave beams or alternatively using a spatial light modulator. This second method is more flexible and opens the possibility to record a wide range of diffractive elements such as binary, blazed gratings, diffractive lenses, etc. Sharp profiles may as well be recorded. In general they present a clear smoothing of the edges due to various reasons: the cut-off frequency (a low pass filtering) of the optical system, quality of the spatial light modulation, inhibition period, finite size of polymer chains, monomer diffusion, and non-linearities in the recording process. In this work we have analyzed the importance of some of these aspects of the photopolymer and the experimental set-up in order to record high quality DOEs. The photopolymer analyzed is based on polyvinylalcohol/acrylamide. To achieve this goal we have used a diffusion model to simulate the DOE’s recording with different recording intensities distributions.
Sponsor: This work was supported by the Ministerio de Economía y Competitividad of Spain under projects FIS2011-29803-C02- 01 and FIS2011-29803-C02-02 and by the Generalitat Valenciana of Spain under project PROMETEO/2011/021 and ISIC/2012/013.
ISBN: 978- 0- 81949- 705-5
ISSN: 0277-786X
DOI: 10.1117/12.2023861
Language: eng
Type: info:eu-repo/semantics/article
Rights: Copyright 2013 Society of Photo-Optical Instrumentation Engineers. This paper was published in Proceedings of SPIE, vol. 8855, and is made available as an electronic reprint with permission of SPIE. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Peer Review: si
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