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  2. White light interferometry - Wikipedia

    en.wikipedia.org/wiki/White_light_interferometry

    Figure 2: Optical setup of a Twyman-Green interferometer with a CCD image sensor. The interference occurs for white light when the path lengths of the measurement beam and the reference beam are nearly matched. By scanning (changing) the measurement beam path length relative to the reference beam, a correlogram is generated at each pixel. The ...

  3. Zygo Corporation - Wikipedia

    en.wikipedia.org/wiki/Zygo_Corporation

    Zygo Corporation, or simply Zygo, is a manufacturer headquartered at Middlefield, Connecticut, that specializes in optical systems and equipment.Their metrology product lines include 3D measuring microscopes using coherence scanning interferometry, laser Fizeau interferometers for testing optical components, laser displacement interferometers, and heterodyne optical encoders for stage position ...

  4. Interferometry - Wikipedia

    en.wikipedia.org/wiki/Interferometry

    Interferometry typically uses electromagnetic waves and is an important investigative technique in the fields of astronomy, fiber optics, engineering metrology, optical metrology, oceanography, seismology, spectroscopy (and its applications to chemistry), quantum mechanics, nuclear and particle physics, plasma physics, biomolecular interactions ...

  5. Shearing interferometer - Wikipedia

    en.wikipedia.org/wiki/Shearing_interferometer

    Principle of the shearing interferometer. The shearing interferometer is an extremely simple means to observe interference and to use this phenomenon to test the collimation of light beams, especially from laser sources which have a coherence length which is usually significantly longer than the thickness of the shear plate (see graphics) so that the basic condition for interference is fulfilled.

  6. Beam splitter - Wikipedia

    en.wikipedia.org/wiki/Beam_splitter

    A beam splitter or beamsplitter is an optical device that splits a beam of light into a transmitted and a reflected beam. It is a crucial part of many optical experimental and measurement systems, such as interferometers , also finding widespread application in fibre optic telecommunications .

  7. Profilometer - Wikipedia

    en.wikipedia.org/wiki/Profilometer

    For doing large steps, a 3D scan on an optical profiler can be much slower than a 2D scan on a stylus profiler. Optical profilometers do not touch the surface and therefore cannot be damaged by surface wear or careless operators. Many non-contact profilometers are solid-state which tends to reduce the required maintenance significantly. The ...

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