Free-Motion Beam Propagation Factor Measurement by Means of a Liquid Crystal Spatial Light Modulator
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Otros documentos de la autoría: Pérez Vizcaíno, Jorge; Mendoza-Yero, Omel; Martinez Cuenca, Raul; Martínez-León, Lluís; Tajahuerce, Enrique; Lancis, Jesús
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Mostrar el registro completo del ítemcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/43662
comunitat-uji-handle3:10234/43643
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Título
Free-Motion Beam Propagation Factor Measurement by Means of a Liquid Crystal Spatial Light ModulatorAutoría
Fecha de publicación
2012Editor
Institute of Electrical and Electronics EngineersISSN
1551-319X; 1558-9323Cita bibliográfica
JOURNAL OF DISPLAY TECHNOLOGY, VOL. 8, NO. 9, SEPTEMBER 2012Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://ieeexplore.ieee.org/xpl/abstractReferences.jsp?arnumber=6226429&tag=1Versión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
In contrast to the mechanical scanning procedure
described in the standard ISO/DIS 11146, the use of electronically tunable focal length lenses has proved its capability for the
measurement of the laser beam propa ... [+]
In contrast to the mechanical scanning procedure
described in the standard ISO/DIS 11146, the use of electronically tunable focal length lenses has proved its capability for the
measurement of the laser beam propagation factor (
) without
moving components. Here, we demonstrate a novel experimental
implementation where we use a low-cost programmable liquid
crystal spatial light modulator (SLM) for sequentially codifying
a set of lenses with different focal lengths. The use of this kind of
modulators introduces some benefits such as the possibility for
high numerical aperture or local beam control of the phase of the
lenses which allows for minimizing systematic errors originated by
lens aberrations. The beamwidth, according to the second-order
moment of the irradiance, is determined for each focal length by
using a digital sensor at a fixed position with respect to the spatial
light modulator. After fitting the measured data to the theoretical
focusing behavior of a real laser beam, the beam propagation
factor is obtained. We successfully validated the results in the laboratory where a full digital control of the measurement procedure
without mechanical scanning was demonstrated. [-]
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Journal of Display Technology, 2012, Vol. 8, Num. 9Derechos de acceso
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