Holographic surface contouring using wavelength modulation of laser diodes

R. P. Tatam, J. C. Davies, C. H. Buckberry, J. D C Jones

Research output: Contribution to journalArticle

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. © 1990.

Original languageEnglish
Pages (from-to)317-321
Number of pages5
JournalOptics and Laser Technology
Volume22
Issue number5
Publication statusPublished - Oct 1990

Keywords

  • ESPI
  • fibre optics
  • lasers (diode)
  • surface contouring

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