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14 búsqueda de la palabra clave 'Materia = Ciencias Biomédicas: Óptica y optometría: Óptica no líneal'
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Fernández Vigo, José Ignacio ; Fernández Vigo, Cristina ; Martínez de la Casa, Jose Maria ; Sáenz Francés, Federico ; Santos Bueso, Enrique ; García Feijoo, Julián ; Fernández Vigo, José Ángel | Elsevier España | 2016-02Objetivo: estudiar las estructuras que conforman el ángulo iridocorneal mediante tomografía de coherencia óptica (OCT) de segmento anterior, definiendo sus características tomográficas y cuantificando su frecuencia de identificación. Material y [...]![]()
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García Fernández, Berta ; Álvarez Fernández-Balbuena, Antonio ; Vázquez Moliní, Daniel | OSA Publishing ; Chinese Laser Press | 2016The aim of this work is to provide an analytical method based on experimental measurements in order to obtain the prismatic film deformation for different curvatures of Hollow Cylindrical Prismatic Light Guides (CPLG). To conform cylindrical gui[...]![]()
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Álvarez Fernández-Balbuena, Antonio ; González Montes, Mario ; García Botella, Ángel ; Vázquez Moliní, Daniel | Spie-Soc Photo-Optical Instrumentation Engineers | 2015-02-09Automatic optimization algorithms have been recently introduced as nonimaging optics design techniques. Unlike optimization of imaging systems, nonsequential ray tracing simulations and complex noncentered systems design must be considered, addi[...]![]()
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Peral Cerdá, Assumpta ; Alonso Fernández, José ; Gómez Pedrero, José Antonio | The Optical Society (OSA) | 2018-11-15Evaluation of the Meibomian glands morphology is becoming a popular assessment for dry eye. This evaluation is usually done by imaging the glands on the everted lids while they are illuminated with infrared light. Nowadays techniques to determin[...]![]()
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Melle Hernández, Sonia ; Gómez Calderón, Óscar ; Carreño Sánchez, Fernando ; Cabrera Granado, Eduardo ; Antón Revilla, Miguel Ángel ; Jarabo Lallana, Sebastián | Elsevier Science BV | 2007-11-01The effect of ion density on slow light propagation enabled by coherent population oscillations has been experimentally investigated for highly doped erbium fibers at room temperature. We found that fractional delay increases with ion density. A[...]![]()
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Cabrera Granado, Eduardo ; Melle Hernández, Sonia ; Gómez Calderón, Óscar ; Guerra Pérez, José Manuel | American Physical Society | 2006-12-06We measure polarization-resolved instantaneous patterns in a large-aspect ratio quasi-isotropic Nd:YAG laser. High correlation between the instantaneous orthogonal polarization patterns recorded at the earlier stages of the laser pulse has been [...]![]()
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Hoyo Muñoz, Jesús del ; Sánchez Brea, Luis Miguel ; Gómez Pedrero, José Antonio | Elsevier | 2020-04-11We present a novel method for calibrating a four-axis Mueller matrix polarimeter. This method is valid even for non-ideal optical elements, as it models all polarization elements having both diattenuation and retardance. The method is divided in[...]![]()
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Egatz-Gómez, Ana ; Gómez Calderón, Óscar ; Melle Hernández, Sonia ; Carreño Sánchez, Fernando ; Antón Revilla, Miguel Ángel ; Gort, Elske M. | Elsevier Science BV | 2013-06We study the green upconversion luminescence of Er3+ ions in an aluminosilicate optical fiber upon near infrared excitation at 787 nm. The dependence of the upconversion luminescence on temperature has been determined. As temperature drops from [...]![]()
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Melle Hernández, Sonia ; Gómez Calderón, Óscar ; Caro, César E. ; Cabrera Granado, Eduardo ; Antón Revilla, Miguel Ángel ; Carreño Sánchez, Fernando | Optical Society of America | 2008-04-15We report a change from sub- to superluminal propagation upon increasing the modulation frequency of an amplitude-modulated 1550?nm signal when propagating through highly doped erbium fibers pumped at 980?nm. We show that the interplay between t[...]![]()
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Gómez Calderón, Óscar ; Melle Hernández, Sonia ; Antón Revilla, Miguel Ángel ; Carreño Sánchez, Fernando ; Arrieta Yáñez, Francisco ; Cabrera Granado, Eduardo | American Physical Society | 2008-11-10We analyze the propagation regime of an amplitude-modulated 1536 nm signal when traveling along a highly doped erbium fiber pumped at 977 nm as a function of the fiber length. A propagation-induced transition from superluminal to subluminal p[...]![]()
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Linear and nonlinear properties in an ensemble of single-hole spin InGaAs/GaAs quantum dots are theoretically studied. The application of a DC magnetic field in the semiconductor growth plane induces a Zeeman splitting of the hole levels which c[...]![]()
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Melle Hernández, Sonia ; Gómez Calderón, Óscar ; Antón Revilla, Miguel Ángel ; Carreño Sánchez, Fernando ; Egatz-Gómez, Ana | OSA Publishing | 2012The homogeneous linewidth of the transition I15/24?I13/24 in highly doped erbium fibers and its dependence with temperature in the range from 10 to 50 K are experimentally characterized using spectral hole burning. The homogeneous linewidth depe[...]![]()
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Cabrera Granado, Eduardo ; Soler Rus, Miguel Odín ; Guerra Pérez, José Manuel | IOP Publishing, Ltd. | 2010-01-20A study on the spatio-temporal dynamics of broad-area Nd:YAG (yttrium aluminium garnet), Nd-doped phosphate glass and Nd-doped silicate glass lasers is presented to show the influence of the inhomogeneous gain profile and cross-relaxation phenom[...]![]()
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Melle Hernández, Sonia ; Calderón, Oscar Gómez ; Egatz-Gómez, Ana ; Cabrera Granado, Eduardo ; Carreño Sánchez, Fernando ; Antón Revilla, Miguel Ángel | The Optical Society Of America | 2015-10-26We experimentally study the temporal dynamics of amplitude-modulated laser beams propagating through a water dispersion of graphene oxide sheets in a fiber-to-fiber U-bench. Nonlinear refraction induced in the sample by thermal effects leads to [...]