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bd40bc7c7a Leith, Space-invariant achromatic grating interferometers: theory (TE), Appl. Such an arrangement is shown in Figure 3. 237, 1985. As mentioned above, the z-value of the positioning stage, when the modulation of the interference signal for a certain pixel is greatest, defines the height value for this pixel. Opt., 14, p. Denisyuk, On the reproduction of the optical properties of an object by the wave field of its scattered radiation, Pt.
The first algorithm is used to evaluate the envelope of the correlogram; the z-value is derived from the maximum. Ooops! I can't find the page you're looking for You may not be able to find the page you were after because of: An out-of-date bookmark/favorite A search engine that has an out-of-date listing for us A mis-typed address You might find one of the following links useful: Home Page News Articles Equipment Videos Directory Journals Books Courses Events Materials Applications Industries About The Team Search Become a Member Newsletters Contact Help/FAQs Advertise Terms . The interference objective is the most important part of such a microscope. Figure 2: Optical setup of a Twyman-Green interferometer with a CCD image sensor. Advances in Optics and Photonics 7, 1-65. From equations 2 and 3 the intensity on the screen can be derived - equation 4:. As described here, white light interferometry is a non-contact optical method for surface height measurement on 3-D structures with surface profiles varying between tens of nanometers and a few centimeters.