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.


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    Title :

    Optical fibre electronic speckle pattern surface contouring using wavelength modulation of laser diodes


    Additional title:

    Die Messung von Oberflächenkonturen mit elektronischer Speckle-Interferometrie und optischen Fasern mit Hilfe einer Wellenlängenmodulation von Halbleiterlasern


    Contributors:
    Tatam, R.P. (author) / Davies, J.C. (author) / Buckberry, C.H. (author) / Jones, J.D. (author)


    Publication date :

    1990


    Size :

    8 Seiten, 4 Bilder, 14 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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