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Light beams carry energy and linear momentum, but they also transport angular momentum. In order to obtain an expression for the angular momentum carried by light we will use paraxial approximation within classical electromagnetic theory. It is [...]texto impreso
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The angular momentum of non-uniformly totally polarized beams is investigated using methods from the beam characterization approach. The relationship between the elements of the beam matrix for the two components of the field and the angular mom[...]texto impreso
Serna Galán, Julio ; Martínez Herrero, Rosario ; Mejías Arias, Pedro Miguel | The Optical Society Of America | 1993-03-01The beam quality behavior of Hermite-Gauss laser modes propagating through Gaussian apertures is analyzed.texto impreso
Serna Galán, Julio ; Martínez Herrero, Rosario ; Mejías Arias, Pedro Miguel | Optical Society of America | 1992-08-01Beam quality behavior of Gaussian Schell-model beams that propagate through Gaussian apertures is analyzed.texto impreso
Serna Galán, Julio ; Martínez Herrero, Rosario ; Mejías Arias, Pedro Miguel | Taylor and Francis Ltd. | 1992-03The quality behaviour of Gaussian Schell-model fields propagating through general (non-orthogonal) ABCD optical systems has been characterized by introducing a number of parameters. Such parameters have been given in terms of the Wigner distribu[...]texto impreso
Serna Galán, Julio ; Martínez Herrero, Rosario ; Mejías Arias, Pedro Miguel | Chapman & Hall Ltd. | 1992-09An analytic and measurable beam parameter is defined for beams emerging from heterojunction monomode diode lasers with very thin active layers, which provides a joint description of their focusing capabilities and far field divergence behaviour.[...]texto impreso
A complete spatial characterization (in second-order moments) of a doughnut-type beam from a pulsed transversely excited atmospheric CO_2 laser is described. It includes the measurement of the orbital angular momentum carried by the beam. The ke[...]texto impreso
We show how to decouple a coherent Gaussian beam having general astigmatism (to transform it into a beam having only simple astigmatism, or orthogonal symmetry) by using a single rotated thin cylindrical lens. The resulting coherent orthogonal G[...]texto impreso
Bassanite (CaSO_4•½ H_2O) and anhydrite (CaSO_4) are the low-temperature products of gypsum (CaSO_4·2H_2O) dehydration, which are obtained at about 373 and 433 K, respectively. These sulphates have non-centrosymmetric crystallographic point grou[...]texto impreso
Martínez Matos, Óscar ; Alieva Krasheninnikova, Tatiana ; Canabal Boutureira, Héctor ; Navarrete Fernández, María de la Cruz ; Gonzalo Fonrodona, Isabel ; Herrera Fernández, José María ; Irigoyen Irigoyen, Maite ; Luis Aina, Alfredo ; Piquero Sanz, Gemma ; Rodrigo Martín Romo, José Augusto ; Sánchez Brea, Luis Miguel ; Sánchez Martín, José Antonio ; Serna Galán, Julio ; Tercero Gómez, José Luis ; Torcal Milla, Francisco José ; Vilas Prieto, José Luis ; Weigand Talavera, Rosa | 2015Se propone un cambio en la metodología docente de la asignatura Laboratorio de Física III del Grado en Física, para hacerla más dinámica y potenciar la participación e iniciativas de los estudiantes, adecuándola al espíritu de Boloniatexto impreso
Miranda Pantoja, José Miguel ; Antoranz Canales, Pedro ; Muñoz San Martín, Sagrario ; Tejedor Álvarez, Luis Ángel ; Sebastián Franco, José Luis ; Díaz Gómez, Leonardo ; Serna Galán, Julio ; Herrera Fernández, Fernando ; Villarín Rosales, Álvaro ; Sánchez Ávila, Mario ; Cereceda Arias, Marcos ; Teba Baeza, Pedro Miguel ; Fernández Rodríguez, Pablo ; Oliver García, Clara | 2018-10-15En esta memoria se describen los resultados del proyecto num 122, "Internacionalización de las prácticas de laboratorio en las asignaturas del área de Electromagnetismo del grado de Ingeniería Electrónica". Se han realizado más de veinte vídeos [...]texto impreso
In a stratified graded-index medium the variation of the refractive index can be measured directly from the analysis of light paths. Only Snell's law and a simple set-up based on digitized images and a personal computer are needed.texto impreso
Two new families of zoom optical systems, developed for industrial and medical laser applications, are introduced. First we discuss the main physical processes involved in industrial laser applications and the requirements for the optics. The sp[...]texto impreso
Serna Galán, Julio ; Martínez, C. ; Encinas Sanz, Fernando ; Martínez Herrero, Rosario ; Mejías Arias, Pedro Miguel | Elsevier Science B.V. | 1997-07-01From the application of a simple analytical model to describe a laser pulse, the transversal spatial structure of the pulse amplitude is linked to its (measurable) second-order intensity moments, integrated along the pulse duration. These formul[...]
