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Measurement of the shape of objects by the interferometry with two wavelengths

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Fringe 2009
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White-light interferometry is an established method for the measurement of geometrical shape of object with smooth or rough surface [1]. One of the disadvantages of white-light interferometry is that the required broadband light sources suffer from a low luminance. This shows up when the shape of object with a weakly reflecting surface is measured or when the measured area is large. One way to overcome this disadvantage is to replace the broadband light source by two (or more) lasers with various wavelengths.

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References

  1. Dresel, T, Häusler, G, Venzke, H (1992) Three-dimensional sensing of rough surfaces by coherence radar. Appl. Opt. 31: 919–925

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Acknowledgements

This research was supported financially by the projects MSM 6198959213 and 1M06002 of Ministry of Education, Youth and Sports of the Czech Republic.

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© 2009 Springer-Verlag Berlin Heidelberg

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Pavlicek, P., Häusler, G. (2009). Measurement of the shape of objects by the interferometry with two wavelengths. In: Osten, W., Kujawinska, M. (eds) Fringe 2009. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-03051-2_55

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  • DOI: https://doi.org/10.1007/978-3-642-03051-2_55

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