Electronic speckle pattern surface contouring using optical fibres and wavelength modulation of laser diodes
Date
1990-12-31T00:00:00Z
Supervisor/s
Journal Title
Journal ISSN
Volume Title
Publisher
International Society for Optical Engineering; 1999
Department
Type
Article
ISSN
0277-786X
Format
Free to read from
Citation
RP Tatam, JC Davies, CH Buckberry and JDC Jones. Electronic speckle pattern surface contouring using optical fibres and wavelength modulation of laser diodes. Proceedings of SPIE : Conference on Fiber Optics, 24-26 April 1990, Volume 1314, pp. 278-283
Abstract
The incorporation of laser diodes and monomode fibre optics into an Electronic Speckle Pattern Interferometer (ESPI) has led to the development of a novel holographic surface contouring system. Height contours are obtained by switching between two laser wavelengths. Contour intervals from 0.5-5 mm have been generated by modulating the injection current of a single laser diode source and are demonstrated on an automotive disc brake hub.