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. © 1990.
Original language | English |
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Pages (from-to) | 317-321 |
Number of pages | 5 |
Journal | Optics and Laser Technology |
Volume | 22 |
Issue number | 5 |
Publication status | Published - Oct 1990 |
Keywords
- ESPI
- fibre optics
- lasers (diode)
- surface contouring