Dr. Elena Fernández Profile

Dr. Elena Fernández

at Univ de Alicante

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Author

Publications (24)

Proceedings Article | 17 July 2014 Open Access

Development of Matlab GUI educational software to assist a laboratory of physical optics

Elena Fernández, Rosa Fuentes, Celia García, Inmaculada Pascual

Proceedings Volume 9289, 92891X (2014) https://doi.org/10.1117/12.2070757

KEYWORDS: Polarizers, Polarization, Human-machine interfaces, Reflectivity, Transmittance, Software development, Visualization, MATLAB, Optical simulations, Physics

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Proceedings Article | 1 May 2014 Paper

Holographic transmission gratings stored with high spatial frequency in PVA/AA photopolymers

E. Fernández, R. Fuentes, M. Ortuño, A. Beléndez, I. Pascual

Proceedings Volume 9131, 91311Z (2014) https://doi.org/10.1117/12.2052417

KEYWORDS: Spatial frequencies, Diffraction gratings, Photopolymers, Holography, Diffraction, Spatial resolution, Data storage, Holograms, Beam splitters, Humidity

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Proceedings Article | 18 November 2013 Paper

UV-visible transmittance of silicone-hydrogel contact lenses measured with a fiber optic spectrometer

R. Fuentes, E. Fernández, I. Pascual, C. García

Proceedings Volume 8785, 8785AZ (2013) https://doi.org/10.1117/12.2025710

KEYWORDS: Contact lenses, Transmittance, Silicon, Spectroscopy, Proteins, Ultraviolet radiation, Visible radiation, Fiber optics, Fiber optics tests, Manufacturing

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Proceedings Article | 5 May 2012 Paper

Analysis of the geometry of a holographic memory setup

A. Márquez, E. Fernández, F. J. Martínez, S. Gallego, M. Ortuño, A. Beléndez, I. Pascual

Proceedings Volume 8429, 84291Y (2012) https://doi.org/10.1117/12.921294

KEYWORDS: Holography, Binary data, Fourier transforms, Wavefronts, Optical correlators, Data storage, Beam splitters, Optical signal processing, Lenses, Cameras

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Proceedings Article | 5 May 2012 Paper

Study of the stability in holographic reflection gratings recorded in PVA/AA-based photopolymer

Elena Fernández, Rosa Fuentes, Manuel Ortuño, Andres Marquez, Augusto Beléndez, Inmaculada Pascual

Proceedings Volume 8429, 84291Z (2012) https://doi.org/10.1117/12.921636

KEYWORDS: Diffraction gratings, Diffraction, Holography, Transmittance, Reflection, Bridges, Spectrophotometry, Refractive index, Optical design, Absorption

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Proceedings Article | 11 May 2011 Paper

Reduction of zero-order spatial frequencies by using binary intensity and phase modulations in holographic data storage

Elena Fernández, Andres Marquez, Diego Piñol, Javier Padilla, Inmaculada Pascual

Proceedings Volume 8074, 807414 (2011) https://doi.org/10.1117/12.887077

KEYWORDS: Binary data, Modulation, Phase modulation, Holography, Data storage, Fourier transforms, LCDs, Spatial light modulators, Spatial frequencies, Transmittance

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Proceedings Article | 18 May 2010 Paper

Initiator system in holographic photopolymer materials

M. Ortuño, E. Fernández, R. Fuentes, S. Gallego, A. Márquez

Proceedings Volume 7722, 772222 (2010) https://doi.org/10.1117/12.853789

KEYWORDS: Holographic materials, Holography, Polymers, Diffraction, Holograms, Photopolymers, Diffraction gratings, Crystals, Nitrogen, Argon ion lasers

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Proceedings Article | 14 May 2010 Paper

Study of influence of ACPA in holographic reflection gratings recorded in PVA/AA based photopolymer

Rosa Fuentes, Elena Fernández, Celia García, Augusto Beléndez, Inmaculada Pascual

Proceedings Volume 7717, 77170Q (2010) https://doi.org/10.1117/12.853816

KEYWORDS: Holography, Refractive index, Diffraction gratings, Reflectivity, Spatial frequencies, Reflection, Polymers, Diffraction, Transmittance, Holographic materials

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Proceedings Article | 14 May 2010 Paper

Generation of diffractive optical elements onto a photopolymer using a liquid crystal display

A. Márquez, S. Gallego, M. Ortuño, E. Fernández, M. Álvarez, A. Beléndez, I. Pascual

Proceedings Volume 7717, 77170D (2010) https://doi.org/10.1117/12.854786

KEYWORDS: LCDs, Calibration, Lenses, Phase shift keying, Diffractive optical elements, Modulation, CCD cameras, Holography, Diffusion, Transparency

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Proceedings Article | 20 May 2009 Paper

Properties of PVA/AA photopolymers at very low spatial frequencies

S. Gallego, A. Márquez, D. Méndez, S. Marini, E. Fernández

Proceedings Volume 7358, 73581G (2009) https://doi.org/10.1117/12.820716

KEYWORDS: Spatial frequencies, Photopolymers, Diffusion, Diffraction gratings, Diffraction, LCDs, Refractive index, Phase shift keying, Phase modulation, Polymers

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Proceedings Article | 20 May 2009 Paper

Linear response deviations in photopolymers

M. Ortuño, C. Neipp, E. Fernández, M. Álvarez, A. Beléndez

Proceedings Volume 7358, 735815 (2009) https://doi.org/10.1117/12.820449

KEYWORDS: Photopolymers, Diffraction, Diffusion, Polymers, Diffraction gratings, Modulation, Holography, Holograms, Refractive index, Polymerization

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Proceedings Article | 19 May 2009 Paper

Reflection holograms in a PVA/AA photopolymer: several compositions

Rosa Fuentes, Elena Fernández, Celia García, Inmaculada Pascual

Proceedings Volume 7358, 73581D (2009) https://doi.org/10.1117/12.820628

KEYWORDS: Holography, Holograms, Diffraction, Diffraction gratings, Spatial frequencies, Polymers, Transmittance, Holographic materials, Optical storage, Beam splitters

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Proceedings Article | 19 May 2009 Paper

Multiplexing holograms for data page storage using a LCD as hybrid ternary modulation

Elena Fernández, Manuel Ortuño, Sergi Gallego, Celia García, Andrés Márquez, Augusto Beléndez, Inmaculada Pascual

Proceedings Volume 7358, 73581C (2009) https://doi.org/10.1117/12.820622

KEYWORDS: Holograms, LCDs, Multiplexing, Holography, Image quality, Data storage, Modulation, Fourier transforms, Polarizers, 3D image reconstruction

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Proceedings Article | 25 April 2008 Paper

Influence of the incident angle in the performance of LCoS displays

Angel Lizana, Nuria Martin, Elena Fernandez, Andrés Márquez, Ignacio Moreno, Claudio Iemmi, Juan Campos, María Yzuel

Proceedings Volume 6994, 69940J (2008) https://doi.org/10.1117/12.783812

KEYWORDS: Liquid crystal on silicon, LCDs, Polarization, Wave plates, Polarimetry, Mueller matrices, Polysomnography, Adaptive optics, Optical components, Polarizers

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Proceedings Article | 25 January 2008 Paper

Real-time interferometric characterization of a PVA based photopolymer

Andrés Márquez, Sergi Gallego, David Méndez, Manuel Ortuño, Elena Fernández, Mariela Álvarez, Cristian Neipp, Augusto Beléndez, Inmaculada Pascual

Proceedings Volume 6912, 691217 (2008) https://doi.org/10.1117/12.763548

KEYWORDS: Modulation, Holography, Interferometers, Interferometry, Spatial frequencies, Diffusion, Phase shift keying, Phase shifts, Holographic materials, Polymers

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Proceedings Article | 25 January 2008 Paper

New trends on photopolymers

M. Ortuño, E. Fernández, S. Gallego, A. Márquez, C. Neipp, I. Pascual, A. Beléndez

Proceedings Volume 6912, 691207 (2008) https://doi.org/10.1117/12.762658

KEYWORDS: Photopolymers, Holography, Holograms, Diffraction, Toxicity, Polymers, Diffraction gratings, Holographic optical elements, Holographic materials, Humidity

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Proceedings Article | 25 January 2008 Paper

Multiplexing holograms for data page storage as a holographic memory in a PVA/AA photopolymer

Elena Fernández, Manuel Ortuño, Sergi Gallego, Celia García, Andrés Márquez, Augusto Beléndez, Inmaculada Pascual

Proceedings Volume 6912, 691214 (2008) https://doi.org/10.1117/12.762565

KEYWORDS: Holograms, LCDs, Holography, Multiplexing, Data storage, Image quality, Polarizers, Charge-coupled devices, Holographic materials, Spatial light modulators

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Proceedings Article | 9 May 2007 Paper

Optimization of a holographic memory setup using a LCD and a PVA based photopolymer

Elena Fernández, Manuel Ortuño, Andrés Márquez, Sergi Gallego, Augusto Beléndez, Inmaculada Pascual

Proceedings Volume 6587, 65870J (2007) https://doi.org/10.1117/12.722917

KEYWORDS: LCDs, Holography, Image quality, Holograms, Data storage, Spatial light modulators, Holographic materials, 3D image reconstruction, Charge-coupled devices, Image processing

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Proceedings Article | 9 May 2007 Paper

Characterization and optimization of liquid crystal displays for data storage applications

Andrés Márquez, Sergi Gallego, David Méndez, Mariela Álvarez, Elena Fernández, Manuel Ortuño, Augusto Beléndez, Inmaculada Pascual

Proceedings Volume 6587, 658715 (2007) https://doi.org/10.1117/12.722647

KEYWORDS: Modulation, LCDs, Phase shift keying, Binary data, Fourier transforms, Holography, Birefringence, Data storage, Holographic data storage systems, Amplitude modulation

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Proceedings Article | 9 May 2007 Paper

Low-cost liquid crystal display optimized as a monopixel coherent modulator

Andrés Márquez, Mariela Álvarez, Luis Puerta, Rocío Estévez, Elena Fernández, Augusto Beléndez, Inmaculada Pascual

Proceedings Volume 6587, 658716 (2007) https://doi.org/10.1117/12.722648

KEYWORDS: LCDs, Phase shift keying, Modulation, Reflectivity, Polarizers, Electro optical modeling, Wave plates, Molecules, Birefringence, Liquid crystals

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Proceedings Article | 9 June 2006 Paper

High thickness acrylamide photopolymer for peristrophic multiplexing

Manuel Ortuño, Elena Fernández, A. Márquez, Sergi Gallego, Cristian Neipp, Inmaculada Pascual

Proceedings Volume 6252, 62520U (2006) https://doi.org/10.1117/12.677014

KEYWORDS: Holograms, Multiplexing, Diffraction gratings, Holography, Diffraction, Holographic materials, Nd:YAG lasers, Helium neon lasers, Polymers, Plutonium

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The acrylamide photolymers are considered interesting materials for holographic media. They have high diffraction efficiency (ratio of the intensities of the diffracted and the incident beams), an intermediate energetic sensitivity among other materials and post-processing steps are not necessary, therefore the media is not altered. The layers of these materials, about 1 mm thick, are a suitable media for recording many diffraction gratings in the same volume of photopolymer using peristrophic multiplexing technique, with great practical importance in the field of holographic memories type WORM (write once read many). In this work we study the recording of diffraction gratings by peristrophic multiplexing with axis of rotation perpendicular to the recording media. The photopolymer is composed of acrylamide as the polymerizable monomer, triethanolamine as radical generator, yellowish eosin as sensitizer and a binder of polyvinyl alcohol. We analyze the holographic behaviour of the material during recording and reconstruction of diffraction gratings using a continuous Nd:YAG laser (532 nm) at an intensity of 5 mW/cm² as recording laser. The response of the material is monitored after recording with an He-Ne laser. We study the recording process of unslanted diffraction gratings of 1125 lines/mm. The diffraction efficiency of each hologram is seen to decrease as the number of holograms recorded increases, due to consumption of the available dynamic range, in a constant exposure scheduling. It can be seen that the photopolymer works well with high energy levels, without excessive dispersion of light by noise gratings. In order to homogenize the diffraction efficiency of each hologram we use the method proposed by Pu. This method is designed to share all or part of the avaliable dynamic range of the recording material among the holograms to be multiplexed. Using exposure schedules derived from this method we have used 3 scheduling recordings from the algorithm used. Additionaly, we use an exponential scheduling recording in order to correct the exposure times from the first iteration of the algorithm.

Proceedings Article | 25 April 2006 Paper

3-dimensional analysis of holographic memories based on photopolymers using finite differences method

Sergi Gallego, Manuel Ortuño, Cristian Neipp, Andrés Márquez, Augusto Beléndez, Elena Fernández, John Kelly, John Sheridan

Proceedings Volume 6187, 618714 (2006) https://doi.org/10.1117/12.662481

KEYWORDS: Polymers, Diffusion, Photopolymers, Refractive index, Signal attenuation, Holography, Modulation, Finite difference methods, Polymerization, Holograms

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Proceedings Article | 25 April 2006 Paper

Multiplexing holograms in an acrylamide photopolymer

Elena Fernández, Manuel Ortuño, Andrés Márquez, Sergi Gallego, Inmaculada Pascual

Proceedings Volume 6187, 618712 (2006) https://doi.org/10.1117/12.662400

KEYWORDS: Holograms, Diffraction, Multiplexing, Energy efficiency, Holography, Scanning electron microscopy, Diffraction gratings, Holographic materials, Polymers, Volume holography

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Proceedings Article | 13 October 2000 Paper

Advanced order management in ERM systems: the tic-tac-toe algorithm

Mariana Badell, Elena Fernandez, Luis Puigjaner

Proceedings Volume 4192, (2000) https://doi.org/10.1117/12.403656

KEYWORDS: Chemical elements, Manufacturing, Optimization (mathematics), Head, Lead, Interfaces, Computing systems, Roads, Information fusion, Process control

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Showing 5 of 24 publications

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