Two-wavelength speckle interferometry on rough surfaces using a mode hopping diode laser

Two measurements performed on rough surfaced objects are described in this paper. The first sample is a mechanical component with a rather difficult accessible surface to be measured. A two-wavelength krypton laser interferometer with an effective wavelength of 36.47 μm has been used. The second exa...

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Bibliographic Details
Published in:Optics and lasers in engineering 1989, Vol.11 (4), p.271-279
Main Authors: Fercher, A.F., Vry, U., Werner, W.
Format: Article
Language:English
Subjects:
Exact sciences and technology
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Interferometers
Optical instruments, equipment and techniques
Physics
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Summary:Two measurements performed on rough surfaced objects are described in this paper. The first sample is a mechanical component with a rather difficult accessible surface to be measured. A two-wavelength krypton laser interferometer with an effective wavelength of 36.47 μm has been used. The second example is a convex surface of a ground lens. Here a mode hopping diode laser interferometer with an effective wavelength of 2·020 mm has been used.
ISSN:0143-8166
1873-0302
DOI:10.1016/0143-8166(89)90065-1