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Laser speckle movement caused by surface deformation and light wavelength change
- Source :
- Acta Mechanica Sinica. 7:186-192
- Publication Year :
- 1991
- Publisher :
- Springer Science and Business Media LLC, 1991.
-
Abstract
- When a surface is illuminated by laser, the field of diffusing reflective light can be described by Fresnel-Kirchhoff integration in the region of Fresnel. If the correlation, before and after the change of intensity field, is analysed by statistical method, three governing equations for variations of intensity field and speckle movement formulas can be obtained. In these equations, the surface motion, deformation and wavelength change are all considered to cause the speckle movement.
- Subjects :
- Physics
business.industry
Mechanical Engineering
Astrophysics::Instrumentation and Methods for Astrophysics
Computational Mechanics
Physics::Optics
Speckle noise
Deformation (meteorology)
Laser
law.invention
Wavelength
Speckle pattern
Optics
law
Electronic speckle pattern interferometry
Speckle imaging
business
Intensity (heat transfer)
Subjects
Details
- ISSN :
- 16143116 and 05677718
- Volume :
- 7
- Database :
- OpenAIRE
- Journal :
- Acta Mechanica Sinica
- Accession number :
- edsair.doi...........d9c23327f49075f3b55ab0ca70292af0