Diseño y aplicaciones de nuevas estructuras difractivas aperiódicas

Tesis por compendioThe diffractive optical elements have enhanced his importance in the last decades due to the improvement of the technology which allows its construction and the greater computing power that helps predicting the behaviour of the diffractive structures in function of the design parameters without en extra cost. The periodic symmetry become a key factor in order to understand the performance of these elements, and it allows to study the properties and the applicability of the different diffractive elements. However, this periodicity also introduces certain limitation in the design of the elements and their properties, such as high chromatic aberration when they are used as image forming elements. To overcome this limitations it was proposed the use of deterministic aperiodic sequences in the design of the diffractive optical elements. In this Thesis work I study different aperiodic sequences and their effect in the design of new diffractive structures. In particular, we use the Cantor fractal set, the Fibonacci sequence and the Thue--Morse series in the design of devices with different purposes. Along the development of the Thesis there have been generated new diffractive elements which overcome some limitations, opening new field for the application of pre-existing technologies. Between them, they can be highlighted the optical alignment systems, the generation of optical vortex, the reduction of the chromatic aberration and the enhancement of the focal depth in image forming elements.Los elementos ópticos difractivos han ganado importancia en las últimas décadas debido al avance de la tecnología que permite su construcción y al aumento de la potencia de cálculo computacional que permite predecir, con un coste mínimo, su comportamiento en función de los múltiples parámetros que definen su estructura. La periodicidad constituye un factor clave a la hora de entender su funcionamiento y estudiar las propiedades y aplicabilidad de los diferentes tipos de elementos difractivos. Ahora bien, esta periodicidad también introduce ciertas limitaciones en el diseño de los elementos y en sus propiedades, como por ejemplo una alta aberración cromática al ser utilizados como elementos formadores de imagen. Para superar estas limitaciones se propuso la aplicación de secuencias aperiódicas deterministas al diseño de los elementos ópticos difractivos. En este trabajo de Tesis se han estudiado diferentes secuencias aperiódicas y sus efectos en el diseño de nuevas estructuras difractivas. En particular, se ha utilizado la secuencia fractal de Cantor, la serie de Fibonacci y la serie de Thue--Morse en el diseño de dispositivos difractivos con diferentes finalidades. A lo largo del desarrollo del trabajo de Tesis se han generado nuevos elementos difractivos que superan ciertas limitaciones, abriendo nuevos campos de aplicación a tecnologías preexistentes. Entre ellos, podemos destacar los sistemas de alineación óptica, la generación de vórtices ópticos, la reducción de la aberración cromática y el aumento de la profundidad de foco en elementos formadores de imagen.Els elements òptics difractius han guanyat importancia les últimes dècades degut a l'avanç de la tecnología que permet la seua construcció y a l'augment de la potència de càlcul computacional que permet predir, amb un cost mínim, el seu comportament en funció dels diferents parámetres que defineixen la seua estructura. La periodicitat constitueix un factor clau a l'hora d'entendre el seu funcionament y estudiar les propietats y aplicabilitat dels diferents tipus d'elements difractius. Ara be, aquesta periodicitat tambe introdueix certes llimitacions en el disseny dels elements y les seus propietats, com per exemple una elevada aberració cromàtica quan actuen com a elements formadors d'imatges. Per superar aquestes llimitacions es va proposar l'aplicació de diferents sequencies aperiòdiques deterministes al disseny dels elements òptics difractius. En aquest treball de Tesi estudie diferents sequencies aperiòdiques y els seus efectes en el disseny de noves estructures difractives. En particular, s'han utilitzat la secuencia fractal de Cantor, la serie de Fibonacci y la serie de Thue--Morse en el disseny de dispositius difractius amb diferents finalitats. Al llarg del desenvolupament del treball de Tesi s'han generat nous elements difractius que superen certes llimitacions, obint nous camps d'aplicació a tecnologies preexistents. Entre ells, podem destacar els sistemes d'alineació òptica, la generació de vòrtex òptics, la reducció de l'aberració cromàtica y l'augment de la profunditat de fòcus d'elements formadors d'imatges.Ferrando Martín, V. (2017). Diseño y aplicaciones de nuevas estructuras difractivas aperiódicas [Tesis doctoral]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/79508TESISPremios Extraordinarios de tesis doctoralesCompendi

Guiding properties of a photonic quasi-crystal fiber based on the thue-morse sequence

© 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.We present a novel microstructured optical fiber having a quasi-periodic distribution of air holes based on the Thue–Morse sequence. The transverse section of these fibers is basically a two-dimensional photonic quasi-crystal that can also provide complete photonic bandgaps without being a perfect periodic structure. Like in the conventional photonic crystal fibers, if the quasi-periodicity is broken by decreasing the size of some air holes or by introducing an extra air hole, the modified holes become defects that localize and guide light along the fiber. The guidance is attributed to the inhibition of transverse radiation produced by the photonic quasi-crystal cladding. Dispersion curves of guided modes for different structural parameters are calculated, along with the transverse intensity distribution of the fundamental mode. In particular, several specially designed Thue–Morse quasi-crystal fibers with nearly zero ultraflattened group-velocity dispersion are presented.This work was supported in part by the Generalitat Valenciana, Spain, under Grant ACOMP/2014/180 and Grant PROMETEOII/2014/072, and in part by the Ministerio de Economia y Competitividad under Grant FIS2011-23175 and Grant TEC2013-46643-C2-1-R. (Corresponding author: Juan A. Monsoriu.)Ferrando Martín, V.; Coves, Á.; Andrés, P.; Monsoriu Serra, JA. (2015). Guiding properties of a photonic quasi-crystal fiber based on the thue-morse sequence. IEEE Photonics Technology Letters. 27(18):1903-1906. https://doi.org/10.1109/LPT.2015.2444991S19031906271

Twin axial vortices generated by Fibonacci lenses

Optical vortex beams, generated by Diffractive Optical Elements (DOEs), are capable of creating optical traps and other multifunctional micromanipulators for very specific tasks in the microscopic scale. Using the Fibonacci sequence, we have discovered a new family of DOEs that inherently behave as bifocal vortex lenses, and where the ratio of the two focal distances approaches the golden mean. The disctintive optical properties of these Fibonacci vortex lenses are experimentally demonstrated. We believe that the versatility and potential scalability of these lenses may allow for new applications in micro and nanophotonics.We acknowledge the financial support from Ministerio de Economia y Competitividad (grant FIS2011-23175), Generalitat Valenciana (grant PROMETEO2009-077), and Universitat Politecnica de Valencia (SP20120569), Spain. L.R. acknowledges a fellowship of "Fundacion CajaMurcia", Spain.Calatayud Calatayud, A.; Ferrando Martín, V.; Remón Martín, L.; WALTER DANIEL FURLAN; Monsoriu Serra, JA. (2013). Twin axial vortices generated by Fibonacci lenses. Optics Express. 21(8):10234-10239. https://doi.org/10.1364/OE.21.010234S1023410239218Sakdinawat, A., & Liu, Y. (2007). Soft-x-ray microscopy using spiral zone plates. Optics Letters, 32(18), 2635. doi:10.1364/ol.32.002635Siemion, A., Siemion, A., Makowski, M., Suszek, J., Bomba, J., Czerwiński, A., … Sypek, M. (2012). Diffractive paper lens for terahertz optics. Optics Letters, 37(20), 4320. doi:10.1364/ol.37.004320Saavedra, G., Furlan, W. D., & Monsoriu, J. A. (2003). Fractal zone plates. Optics Letters, 28(12), 971. doi:10.1364/ol.28.000971Davis, J. A., Sigarlaki, S. P., Craven, J. M., & Calvo, M. L. (2006). Fourier series analysis of fractal lenses: theory and experiments with a liquid-crystal display. Applied Optics, 45(6), 1187. doi:10.1364/ao.45.001187Furlan, W. D., Saavedra, G., & Monsoriu, J. A. (2007). White-light imaging with fractal zone plates. Optics Letters, 32(15), 2109. doi:10.1364/ol.32.002109Roux, F. S. (2004). Distribution of angular momentum and vortex morphology in optical beams. Optics Communications, 242(1-3), 45-55. doi:10.1016/j.optcom.2004.08.006Gbur, G., & Visser, T. D. (2006). Phase singularities and coherence vortices in linear optical systems. Optics Communications, 259(2), 428-435. doi:10.1016/j.optcom.2005.08.074Bishop, A. I., Nieminen, T. A., Heckenberg, N. R., & Rubinsztein-Dunlop, H. (2003). Optical application and measurement of torque on microparticles of isotropic nonabsorbing material. Physical Review A, 68(3). doi:10.1103/physreva.68.033802Ladavac, K., & Grier, D. G. (2004). Microoptomechanical pumps assembled and driven by holographic optical vortex arrays. Optics Express, 12(6), 1144. doi:10.1364/opex.12.001144Lee, W. M., Yuan, X.-C., & Cheong, W. C. (2004). Optical vortex beam shaping by use of highly efficient irregular spiral phase plates for optical micromanipulation. Optics Letters, 29(15), 1796. doi:10.1364/ol.29.001796Tao, S. H., Yuan, X.-C., Lin, J., & Burge, R. E. (2006). Sequence of focused optical vortices generated by a spiral fractal zone plate. Applied Physics Letters, 89(3), 031105. doi:10.1063/1.2226995Furlan, W. D., Giménez, F., Calatayud, A., & Monsoriu, J. A. (2009). Devil’s vortex-lenses. Optics Express, 17(24), 21891. doi:10.1364/oe.17.021891Maciá, E. (2012). Exploiting aperiodic designs in nanophotonic devices. Reports on Progress in Physics, 75(3), 036502. doi:10.1088/0034-4885/75/3/036502Sah, Y., & Ranganath, G. . (1995). Optical diffraction in some Fibonacci structures. Optics Communications, 114(1-2), 18-24. doi:10.1016/0030-4018(94)00600-yGedzelman, S. D., & Vollmer, M. (2011). Crepuscular rays: laboratory experiments and simulations. Applied Optics, 50(28), F142. doi:10.1364/ao.50.00f142Swartzlander, G. A. (2001). Peering into darkness with a vortex spatial filter. Optics Letters, 26(8), 497. doi:10.1364/ol.26.000497Curtis, J. E., & Grier, D. G. (2003). Structure of Optical Vortices. Physical Review Letters, 90(13). doi:10.1103/physrevlett.90.133901Calatayud, A., Rodrigo, J. A., Remón, L., Furlan, W. D., Cristóbal, G., & Monsoriu, J. A. (2012). Experimental generation and characterization of Devil’s vortex-lenses. Applied Physics B, 106(4), 915-919. doi:10.1007/s00340-012-4913-

Characterization of multifocal lenses through a virtual laboratory based on Fourier optics

[ES] En este trabajo presentamos un nuevo laboratorio virtual, desarrollado en Python, que permite la caracterización óptica de una serie de lentes multifocales bajo diferentes parámetros de configuración (esfera, cilindro, eje, diámetro de pupila, aberración esférica, ...) mediante diferentes métricas basadas en la óptica de Fourier, tales como la Función de Transferencia de Modulación (MTF), la Función de Dispersión del Punto (PSF) y la simulación de formación de imágenes de diferentes optotipos.[EN] In this paper we present a new Python developed virtual laboratory that allows the optical characterization of a series of multifocal lenses under different setup parameters (sphere, cylinder, axis, pupil diameter, spherical aberration, ...) by using different metrics based on the Fourier optics, such as the Modulation Transfer Function (MTF), the Point Spread Function (PSF) and the image forming simulation of different optotypes.Este trabajo ha sido financiado por el Ministerio de Ciencia e Innovación de España [PID2019-107391RB-I00] y por la Generalitat Valenciana (España) [PROMETEO/2019/048]. D.  M.-M. también agradece la financiación otorgada por la beca Margarita Salas del Ministerio de Universidades de España financiado por the European Union-Next Generation EU. Este trabajo ha sido desarrollado por el Equipo de Innovación y Calidad Educativa MSEL de la Universitat Politècnica de València.Ferrando Martín, V.; Montagud-Martínez, D.; Monsoriu, JA.; Remón, L.; Furlan, WD. (2023). Caracterización de lentes multifocales mediante un laboratorio virtual basado en la óptica de Fourier. Modelling in Science Education and Learning. 16(2):5-11. https://doi.org/10.4995/msel.2023.1906151116

A label-free diffraction-based sensing displacement immunosensor toquantify low molecular weight organic compounds

[EN] Herein we present a diffractometric immunosensor to quantify low molecular weight organic compounds in a label-free, simple, and sensitive fashion. The approach is based on patterning analyte analogues (haptens) on solid surfaces according to a diffractive structure, and then loading specific antibodies on them to be subsequently displaced by free analytes in solution. This displacement generates a measurable change in the diffractive response that enables to quantify the analyte concentration. In this study we address the fabrication, optimization, and assessment of these diffractive structures of biological probes and their application to the analysis of atrazine, an organic compound extensively used as pesticide. This immunosensor displays well-correlated dose-response curves that reach a detection limit of 1.1¿ng¿mL¿1 of atrazine in label-free conditions. From a general viewpoint, this study also aims to provide insights into exploiting this approach towards prospective in-field analysis and screening strategies to sense multiple low molecular weight compounds in label-free conditions.This work was supported by the Spanish Ministry of Economy and Competitiveness (CTQ2013-45875-R and FIS2011-23175), FEDER, and the Generalitat Valenciana (PROMETEO II/2014/040 and PROMETEO II/2014/072). Special thanks go to Richard A. McAloney and M. Cynthia Goh for hosting M.A.-O. as visiting researcher, sharing their expertise, and offering their valuable support. M.A.-O. also acknowledges the FPI program of the Spanish Ministry of Economy and Competitiveness for a PhD and an EEBB mobility grant.Avella-Oliver, M.; Ferrando Martín, V.; Monsoriu Serra, JA.; Puchades, R.; Maquieira Catala, A. (2018). A label-free diffraction-based sensing displacement immunosensor toquantify low molecular weight organic compounds. Analytica Chimica Acta. 1033:173-179. https://doi.org/10.1016/j.aca.2018.05.060S173179103

Physical and mathematical design of an optical spectrometer

[EN] This work presents the design and construction of a spectrometer made in the laboratory and the development of mathematical models needed to process and analyze the acquired spectrum. For modeling functions it has been used LabVIEW program. The aim is to bring this type of instrumentation to engineering students from both, physical and mathematical point of view. The application has been successfully integrated in the learning strategies of the course Sensores Fisicos, Master Universitario en Sensores Para Aplicaciones Industriales at the Universitat Politecnica de Valencia. As an example, we have characterized different light sources emitting in different regions of the electromagnetic spectrum.[ES] En este trabajo se presenta el diseño y la construcción de un espectrómetro realizado en el laboratorio y el desarrollo de los modelos matemáticos necesarios para procesar y analizar el espectro adquirido con el mismo. Para la modelización de las funciones se ha utilizado el programa LabVIEW. El objetivo es acercar este tipo de instrumentación a los estudiantes de Ingeniería, tanto desde el punto de vista físico como matemático. La aplicación desarrollada ha sido integrada en la asignatura Sensores Físicos del Máster Universitario en Sensores Para Aplicaciones Industriales de la Universitat Politècnica de València. A modo de ejemplo, se han caracterizado diferentes fuentes de iluminación que emiten en distintas regiones del espectro electromagnético.Remón Martín, L.; Ferrando Martín, V.; Furlan, WD.; Monsoriu Serra, JA. (2016). Diseño físico-matemático de un espectrómetro óptico. Modelling in Science Education and Learning. 9(2):5-12. doi:10.4995/msel.2016.5947SWORD51292Nosheen, S., Alam, S., Irfan, M., Qureshi, M. U. A., & Ahmad, S. (2013). Optical Emission Spectrometer, Principle and Latest Industrial Applications. International Journal of Material Sciences, 3(4), 139. doi:10.14355/ijmsci.2013.0304.02T. Duffy, K. Jonassen. Constructivism and the technology of instruction. Lawrence Erlbaum Associates, Hilsdale, New Jersey, 1992.Esquembre, F. (2002). Computers in physics education. Computer Physics Communications, 147(1-2), 13-18. doi:10.1016/s0010-4655(02)00197-2Grayson, D. J., & McDermott, L. C. (1996). Use of the computer for research on student thinking in physics. American Journal of Physics, 64(5), 557-565. doi:10.1119/1.18154Vidaurre, A., Riera, J., Giménez, M. H., & Monsoriu, J. A. (2002). Contribution of digital simulation in visualizing physics processes. Computer Applications in Engineering Education, 10(1), 45-49. doi:10.1002/cae.10016Calatayud, A., Remón, L., Monsoriu, J. A., Giménez, F., & Furlan, W. D. (2013). Ophthalmic: Laboratorio virtual para el diseño de nuevas lentes oftálmicas. Modelling in Science Education and Learning, 6, 173. doi:10.4995/msel.2013.1850Moriarty, P. J., Gallagher, B. L., Mellor, C. J., & Baines, R. R. (2003). Graphical computing in the undergraduate laboratory: Teaching and interfacing with LabVIEW. American Journal of Physics, 71(10), 1062-1074. doi:10.1119/1.1582189Orquín, I., García-March, M.-Á., de Córdoba, P. F., Urcheguía, J. F., & Monsoriu, J. A. (2007). Introductory quantum physics courses using a LabVIEW multimedia module. Computer Applications in Engineering Education, 15(2), 124-133. doi:10.1002/cae.20100J. Casas, "Optica" (Librería General, Zaragoza, 1995)

Multiplexing THz Vortex Beams With a Single Diffractive 3-D Printed Lens

[EN] We present a novel method for experimentally generating multiplexed THz vortex beams by using a single three-dimensional printed element that combines a set of radially distributed spiral phase plates, and a binary focusing Fresnel lens. With this element, we have experimentally demonstrated that THz multiplexing can be tailored to fit within a small space on an optical bench. Results are presented beside numerical simulations, demonstrating the robust nature of the experimental method.This work was supported in part by the Ministerio de Economia y Competitividad, Spain, under Grant DPI2015-71256-R, in part by the Generalitat Valenciana, Spain, under Grant PROMETEO II-2014-072, and in part by the National Center for Research and Development in Poland under Grant LIDER/020/319/L-5/13/NCBR/2014.Machado-Olivares, FJ.; PRZEMYSLAW ZAGRAJEK; Ferrando Martín, V.; Monsoriu Serra, JA.; WALTER DANIEL FURLAN (2019). Multiplexing THz Vortex Beams With a Single Diffractive 3-D Printed Lens. IEEE Transactions on Terahertz Science and Technology. 9(1):63-66. https://doi.org/10.1109/TTHZ.2018.2883831S63669

Relative Peripheral Myopia Induced by Fractal Contact Lenses

[EN] Purpose: To assess the peripheral refraction induced by Fractal Contact Lenses (FCLs) in myopic eyes by means of a two-dimensional Relative Peripheral Refractive Error (RPRE) map. Materials and Methods: This study involved 26 myopic subjects ranging from -0.50 D to -7.00 D. FCLs prototypes were custom-manufactured and characterized. Corneal topographies were taken in order to assess correlations between corneal asphericity and lens decentration. Two-dimensional RPREs were measured with an open-field autorefractor at 67 points, covering the central 60 x 30 degrees of the visual field. The bidimensional RPRE vector components: M, J(0) and J(45) of the difference between the values obtained with and without the FCLs in the eye were obtained. Additionally, the FCL-induced peripheral refraction in tangential and sagittal planes was computed along the horizontal meridian. Results: Induced by the FCLs, significant differences for all vector components were found in the peripheral retina. FCLs were decentered a mean of 0.7 +/- 0.19 mm to the temporal cornea. The two-dimensional RPRE maps manifested the FCLs decentration. In particular, M varied asymmetrically between nasal and temporal retina after fitting the FCLs with a significant increment of the myopic shift beyond 10o (p < 0.05). No correlations were found between the amount of lens decentration and the asphericity of the cornea along temporal and nasal sides. However, significant correlations were found between the corneal asphericity and vector components of the RPRE in naked eyes. FCLs produced an increasing myopic shift in tangential and sagittal power errors along the horizontal meridian. Conclusions: As predicted by ray-tracing simulations, FCLs fitted in myopic eyes produce a myopic shift of the RPRE. The two-dimensional RPRE maps show information about the lens performance that is hidden in the conventional one-dimensional meridional representations.This work was founded by Ministerio de Economía y Competitividad FEDER (Grant DPI2015-71256-R), and by Generalitat Valenciana (Grant PROMETEOII-2014-072), Spain.Rodríguez-Vallejo, M.; Montagud-Martínez, D.; Monsoriu Serra, JA.; Ferrando Martín, V.; Furlan, WD. (2018). Relative Peripheral Myopia Induced by Fractal Contact Lenses. Current Eye Research. 43(12):1514-1521. https://doi.org/10.1080/02713683.2018.1507043S151415214312Wolffsohn, J. S., Calossi, A., Cho, P., Gifford, K., Jones, L., Li, M., … Zvirgzdina, M. (2016). Global trends in myopia management attitudes and strategies in clinical practice. Contact Lens and Anterior Eye, 39(2), 106-116. doi:10.1016/j.clae.2016.02.005Huang, J., Wen, D., Wang, Q., McAlinden, C., Flitcroft, I., Chen, H., … Qu, J. (2016). Efficacy Comparison of 16 Interventions for Myopia Control in Children. Ophthalmology, 123(4), 697-708. doi:10.1016/j.ophtha.2015.11.010Walline, J. J. (2016). Myopia Control. Eye & Contact Lens: Science & Clinical Practice, 42(1), 3-8. doi:10.1097/icl.0000000000000207González-Méijome, J. M., Faria-Ribeiro, M. A., Lopes-Ferreira, D. P., Fernandes, P., Carracedo, G., & Queiros, A. (2015). Changes in Peripheral Refractive Profile after Orthokeratology for Different Degrees of Myopia. Current Eye Research, 41(2), 199-207. doi:10.3109/02713683.2015.1009634Sankaridurg, P. (2017). Contact lenses to slow progression of myopia. Clinical and Experimental Optometry, 100(5), 432-437. doi:10.1111/cxo.12584Hiraoka, T., Kotsuka, J., Kakita, T., Okamoto, F., & Oshika, T. (2017). Relationship between higher-order wavefront aberrations and natural progression of myopia in schoolchildren. Scientific Reports, 7(1). doi:10.1038/s41598-017-08177-6Atchison, D. A., & Rosén, R. (2016). The Possible Role of Peripheral Refraction in Development of Myopia. Optometry and Vision Science, 93(9), 1042-1044. doi:10.1097/opx.0000000000000979Troilo, D. (2016). The Case for Lens Treatments in the Control of Myopia Progression. Optometry and Vision Science, 93(9), 1045-1048. doi:10.1097/opx.0000000000000916Turnbull, P. R. K., Munro, O. J., & Phillips, J. R. (2016). Contact Lens Methods for Clinical Myopia Control. Optometry and Vision Science, 93(9), 1120-1126. doi:10.1097/opx.0000000000000957Rodriguez-Vallejo, M., Benlloch, J., Pons, A., Monsoriu, J. A., & Furlan, W. D. (2014). The Effect of Fractal Contact Lenses on Peripheral Refraction in Myopic Model Eyes. Current Eye Research, 39(12), 1151-1160. doi:10.3109/02713683.2014.903498Charman, W. N. (2011). Keeping the World in Focus: How Might This Be Achieved? Optometry and Vision Science, 88(3), 373-376. doi:10.1097/opx.0b013e31820b052bKee, C.-S., Hung, L.-F., Qiao-Grider, Y., Roorda, A., & Smith, E. L. (2004). Effects of Optically Imposed Astigmatism on Emmetropization in Infant Monkeys. Investigative Opthalmology & Visual Science, 45(6), 1647. doi:10.1167/iovs.03-0841Chu, C. H. G., & Kee, C. S. (2015). Effects of Optically Imposed Astigmatism on Early Eye Growth in Chicks. PLOS ONE, 10(2), e0117729. doi:10.1371/journal.pone.0117729Monsoriu, J. A., Saavedra, G., & Furlan, W. D. (2004). Fractal zone plates with variable lacunarity. Optics Express, 12(18), 4227. doi:10.1364/opex.12.004227Rodríguez-Vallejo, M., Montagud, D., Monsoriu, J. A., & Furlan, W. D. (2017). On the power profiles of contact lenses measured with NIMO TR1504. Journal of Optometry, 10(4), 265-266. doi:10.1016/j.optom.2016.10.002Plainis, S., Atchison, D. A., & Charman, W. N. (2013). Power Profiles of Multifocal Contact Lenses and Their Interpretation. Optometry and Vision Science, 90(10), 1066-1077. doi:10.1097/opx.0000000000000030Calossi, A. (2007). Corneal Asphericity and Spherical Aberration. Journal of Refractive Surgery, 23(5), 505-514. doi:10.3928/1081-597x-20070501-15Lopes-Ferreira, D. P., Neves, H. I. F., Faria-Ribeiro, M., Queirós, A., Fernandes, P. R. B., & González-Méijome, J. M. (2015). Peripheral refraction with eye and head rotation with contact lenses. Contact Lens and Anterior Eye, 38(2), 104-109. doi:10.1016/j.clae.2014.11.201THIBOS, L. N., WHEELER, W., & HORNER, D. (1997). Power Vectors: An Application of Fourier Analysis to the Description and Statistical Analysis of Refractive Error. Optometry and Vision Science, 74(6), 367-375. doi:10.1097/00006324-199706000-00019Ehsaei, A., Mallen, E. A. H., Chisholm, C. M., & Pacey, I. E. (2011). Cross-sectional Sample of Peripheral Refraction in Four Meridians in Myopes and Emmetropes. Investigative Opthalmology & Visual Science, 52(10), 7574. doi:10.1167/iovs.11-7635Osuagwu, U. L., Suheimat, M., & Atchison, D. A. (2017). Peripheral aberrations in adult hyperopes, emmetropes and myopes. Ophthalmic and Physiological Optics, 37(2), 151-159. doi:10.1111/opo.12354Verkicharla, P. K., Suheimat, M., Schmid, K. L., & Atchison, D. A. (2016). Peripheral Refraction, Peripheral Eye Length, and Retinal Shape in Myopia. Optometry and Vision Science, 93(9), 1072-1078. doi:10.1097/opx.0000000000000905Atchison, D. A. (2006). Optical models for human myopic eyes. Vision Research, 46(14), 2236-2250. doi:10.1016/j.visres.2006.01.004He, J. C. (2014). Theoretical model of the contributions of corneal asphericity and anterior chamber depth to peripheral wavefront aberrations. Ophthalmic and Physiological Optics, 34(3), 321-330. doi:10.1111/opo.12127Osuagwu, U. L., Suheimat, M., & Atchison, D. A. (2016). Mirror Symmetry of Peripheral Monochromatic Aberrations in Fellow Eyes of Isomyopes and Anisomyopes. Investigative Opthalmology & Visual Science, 57(7), 3422. doi:10.1167/iovs.16-19267Shen, G., Qi, Q., & Ma, X. (2016). Effect of Moisture Chamber Spectacles on Tear Functions in Dry Eye Disease. Optometry and Vision Science, 93(2), 158-164. doi:10.1097/opx.000000000000077

Multiple-plane image formation by Walsh zone plates

[EN] A radial Walsh filter is a phase binary diffractive optical element characterized by a set of concentric rings that take the phase values 0 or ¿, corresponding to the values + 1 or ¿1 of a given radial Walsh function. Therefore, a Walsh filter can be re-interpreted as an aperiodic multifocal zone plate, capable to produce images of multiple planes simultaneously in a single output plane of an image forming system. In this paper, we experimentally demonstrate for the first time the focusing capabilities of these structures. Additionally, we report the first achievement of images of multiple-plane objects in a single image plane with these aperiodic diffractive lenses.Ministerio de Economia y Competitividad and FEDER (DPI2015-71256-R); Generalitat Valenciana (PROMETEO II-2014-072); MayaNet - Erasmus Mundus Partnership 552061-EM-1-2014-1-IT-ERA MUNDUS-EMA21 (2014-0872/001-001).Machado-Olivares, FJ.; Ferrando Martín, V.; Gimenez Palomares, F.; Furlan, WD.; Monsoriu Serra, JA. (2018). Multiple-plane image formation by Walsh zone plates. Optics Express. 26(16):21210-21218. https://doi.org/10.1364/OE.26.021210S2121021218261

WAVEFRONT TESTER: A new virtual laboratory for wavefront sensors teaching

[EN] We present a new virtual laboratory developed with MatlabcGUI (Graphical User Interface) used toteach di erent aberration eff ects in the "Tecnologi a de Sensores Optoelectr onicos" at "Escuela T ecnicaSuperior de Ingenier a del Diseño" of the Universitat Polit ecnica de Val encia. The objective of this lab is to provide a computer tool to study the working principle of a Shack Hartman sensor and the parameters that determine the dynamic range of the same. Some examples made with di fferent aberrations (defocus,astigmatism, coma) and for diff erent sensor con gurations are presented.[ES] Se presenta un laboratorio virtual desarrollado en MATLAB GUI (Graphical User Interface) para ser utilizado en la asignatura de "Tecnología de Sensores Optoelectrónicos" que se imparte en "Escuela Técnica Superior de Ingeniería del Diseño" de la Universitat Politècnica de València. El objetivo de este laboratorio es servir de herramienta informática para el estudio de un sensor Shack Hartman y los parámetros que determinan el rango dinámico del mismo en la medida de las aberraciones. Se presentan distintos ejemplos realizados con diferentes aberraciones (desenfoque, astigmatismo, coma) y para diferentes configuraciones del sensor.Los autores quieren agradecer al Instituto de Ciencias de la Educación de la Universitat Polit´ecnica de Val´encia y al Vicerrectorat de Pol´ıtiques de Formaci´o i Qualitat Educativa de la Universitat de Val`encia por su apoyo a trav´es del EICE MOMA y de la red UV-SFPIEDOCE14-222789 respectivamente.Ferrando Martín, V.; Furlan, WD.; Remón Martín, L.; Gimenez Palomares, F.; Monsoriu Serra, JA. (2016). WAVEFRONT TESTER: Un nuevo laboratorio virtual para el estudio de los sensores frente de onda. Modelling in Science Education and Learning. 9(1):121-128. https://doi.org/10.4995/msel.2016.4553SWORD12112891Feng, F., White, I. H., & Wilkinson, T. D. (2014). Aberration Correction for Free Space Optical Communications Using Rectangular Zernike Modal Wavefront Sensing. Journal of Lightwave Technology, 32(6), 1239-1245. doi:10.1109/jlt.2014.2301634Idir, M., Kaznatcheev, K., Dovillaire, G., Legrand, J., & Rungsawang, R. (2014). A 2 D high accuracy slope measuring system based on a Stitching Shack Hartmann Optical Head. Optics Express, 22(3), 2770. doi:10.1364/oe.22.002770Li, C., Li, B., & Zhang, S. (2014). Phase retrieval using a modified Shack–Hartmann wavefront sensor with defocus. Applied Optics, 53(4), 618. doi:10.1364/ao.53.000618Marino, J., & Wöger, F. (2014). Feasibility study of a layer-oriented wavefront sensor for solar telescopes. Applied Optics, 53(4), 685. doi:10.1364/ao.53.000685Micó, V., Zalevsky, Z., & Garcia, J. (2012). Superresolved common-path phase-shifting digital inline holographic microscopy using a spatial light modulator. Optics Letters, 37(23), 4988. doi:10.1364/ol.37.004988Paurisse, M., Hanna, M., Druon, F., & Georges, P. (2010). Wavefront control of a multicore ytterbium-doped pulse fiber amplifier by digital holography. Optics Letters, 35(9), 1428. doi:10.1364/ol.35.001428Platt B. C., Shack R. (2001). History and principles of Shack-Hartmann wavefront sensing. Journal of Refractive Surgery, 17, S573-S577