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 fiber electronic speckle-pattern surface contouring using wavelength modulation of laser diodes


    Contributors:

    Conference:

    Fiber Optic Sensors IV ; 1990 ; The Hague,Netherlands


    Published in:

    Publication date :

    1990-08-01





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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