Dynamic speckle imaging with low-cost devices
Authors: Vannoni M., Trivi M., Arizaga R., Rabal H., Molesini G.
Autors Affiliation: CNR-Istituto Nazionale di Ottica Applicata, Largo E. Fermi 6, 50125 Firenze, Italy;
Centro de Investigaciones Opticas and UID Optimo, Facultad de Ingeniería, Universidad Nacional de la Plata, PO Box 124, (1900) La Plata, Argentina
Abstract: 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.
Journal/Review: EUROPEAN JOURNAL OF PHYSICS
Volume: 29 (5) Pages from: 967 to: 975
KeyWords: biospeckleDOI: 10.1088/0143-0807/29/5/010Citations: 3data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2019-10-13References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here