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

Ralph P. Tatam; Jeremy C. Davies; Clive H. Buckberry; Julian D. C. Jones

doi:10.1117/12.20284

1 August 1990 Optical fiber electronic speckle-pattern surface contouring using wavelength modulation of laser diodes

Ralph P. Tatam, Jeremy C. Davies, Clive H. Buckberry, Julian D. C. Jones

Proceedings Volume 1267, Fiber Optic Sensors IV; (1990) https://doi.org/10.1117/12.20284
Event: The International Congress on Optical Science and Engineering, 1990, The Hague, Netherlands

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.

Citation Download Citation

Ralph P. Tatam, Jeremy C. Davies, Clive H. Buckberry, and Julian D. C. Jones "Optical fiber electronic speckle-pattern surface contouring using wavelength modulation of laser diodes", Proc. SPIE 1267, Fiber Optic Sensors IV, (1 August 1990); https://doi.org/10.1117/12.20284

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