CIOP 05384
CENTRO DE INVESTIGACIONES OPTICAS
Unidad Ejecutora - UE
artículos
Título:
Dynamic speckle imaging with low-cost devices
Autor/es:
M: VANNONI, M. TRIVI, R. ARIZAGA, H. RABAL,G. MOLESINI
Revista:
EUROPEAN JOURNAL OF PHYSICS
Editorial:
IOP Publishing
Referencias:
Lugar: London; Año: 2008 vol. 29 p. 967 - 975
ISSN:
0143-0807
Resumen:
Light from a rough sample surface illuminated with a laser consists of a
speckle pattern. If the surface evolves with time, the pattern becomes dynamic,
following the activity of the sample. This phenomenon is used both in research
and in industry to monitor processes and systems that change with time. The
measuring equipment generally includes high-performance CCD cameras and
other expensive devices. Based on the same principle, here we describe a
simplified approach where components and devices commonly available in
undergraduate physics laboratories are instead used. The technique is described
in detail, also reviewing the basic properties of speckle fields. Examples of the
application are given, and suggestions for further investigation are provided.
