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Autor Mejías Arias, Pedro Miguel |
Documentos disponibles escritos por este autor (33)
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Piquero Sanz, Gemma María ; Mejías Arias, Pedro Miguel ; Martínez Herrero, Rosario | Elsevier Science BV | 1994-04-15Sharpness changes of the spatial profile of a gaussian beam induced by spherically aberrated lenses are investigated in terms of the so-called kurtosis parameter. It is shown both theoretically and experimentally that, after a single aberrated l[...]texto impreso
Encinas Sanz, Fernando ; Serna Galán, Julio ; Mejías Arias, Pedro Miguel ; Martínez Herrero, Rosario ; Martínez, C. | Chapman & Hall Ltd. | 1997-09A simple analytical model is proposed to describe the transversal spatial structure of a tridimensional rotationally symmetric pulsed beam. The spatial behaviour of the pulse amplitude is shown to be linked to its (measurable) second- and higher[...]texto impreso
Serna Galán, Julio ; Martínez, C. ; Encinas Sanz, Fernando ; Martínez Herrero, Rosario ; Mejías Arias, Pedro Miguel | IEEE-Inst Electrical Electronics Engineers Inc. | 1998-10The time evolution of the transversal modes in a TEA CO_2 laser cavity has been investigated from the analysis of the time-varying beam quality factor M^2 of the emitted pulses. The experiments reveal a significant change in this parameter durin[...]