Phase-shifting birefringent scatterplate interferometer
نویسندگان
چکیده
منابع مشابه
Phase-shifting birefringent scatterplate interferometer.
We realized what we believe is a new phase-shifting scatterplate interferometer by exploiting the polarization characteristics of a birefringent scatterplate. The common-path design of the interferometer reduces its sensitivity to environmental effects, and phase shifting allows quick and accurate quantitative measurements of the test surface. A major feature of the birefringent scatterplate ap...
متن کاملPhase-Shifting Scatterplate Interferometer
The advantages of common path interferometers for reducing effects of vibrations are well known. A scatterplate interferometer is one common-path interferometer that is well suited for the testing of large concave mirrors, however due to the common path characteristics it is difficult to perform phase-shifting. This paper describes a phase-shifting scatterplate interferometer where the phase-sh...
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We describe a novel interferometer design suitable for highly accurate measurement of wave-front aberrations over a wide range of wavelengths, from visible to x ray. The new design, based on the point diffraction interferometer, preserves the advantages of the conventional point diffraction interferometer but offers higher efficiency and improved accuracy through phase shifting. These qualities...
متن کاملEnergy distribution in a scatterplate interferometer
By adding the energy produced in the interferograms and absorbed by the interferometer itself, it must be possible to prove energy conservation in any interferometer. This calculation is relatively simple for two port interferometers such as the Twyman-Green and Mach-Zehnder. If nonabsorbing beam splitters are used, primary and complementary fringe patterns are produced such that when a dark fr...
متن کاملComment on "Phase-shifting shearing interferometer".
The role of the liquid-crystal layer in the phase-shifting shearing interferometer that was proposed by Griffin [Opt. Lett. 26, 140 (2001)] is analyzed. An extra voltage-dependent phase difference is produced when the phase retarder is oriented at an angle from the optical axis of the laser beam such that the interferogram will not repeat itself after a 2pi phase change of the liquid-crystal re...
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ژورنال
عنوان ژورنال: Applied Optics
سال: 2002
ISSN: 0003-6935,1539-4522
DOI: 10.1364/ao.41.000668