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.
Optical fibre electronic speckle pattern surface contouring using wavelength modulation of laser diodes
Die Messung von Oberflächenkonturen mit elektronischer Speckle-Interferometrie und optischen Fasern mit Hilfe einer Wellenlängenmodulation von Halbleiterlasern
1990
8 Seiten, 4 Bilder, 14 Quellen
Aufsatz (Konferenz)
Englisch
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