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.
|Number of pages||5|
|Journal||Optics and Laser Technology|
|Publication status||Published - Oct 1990|
- fibre optics
- lasers (diode)
- surface contouring