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Everything about Point diffraction interferometer
Type of common-path interferometer
A point diffraction interferometer (PDI) is a type of common-path interferometer. Unlike an amplitude-splitting interferometer, such as a Michelson interferometer, which separates out an unaberrated beam and interferes this with the test beam, a common-path interferometer generates its own reference beam. In PDI systems, the test and reference beams travel the same or almost the same path. This design makes the PDI extremely useful when environmental isolation is not possible or a reduction in the number of precision optics is required. The reference beam is created from a portion of the test beam by diffraction from a small pinhole in a semitransparent coating. The principle of a PDI is shown in Figure 1. Wikipedia →
🧭 Start here: a 6-step reading path
- Read the overview: Point diffraction interferometerA 5-minute orientation
- Skim a recent paper: Improved phase-shifting method for pinhole point diffraction interferometer based on a precise driving of the substrateInfluential work since 2022
- Pick up a classic book: Liquid crystal point diffraction interferometerThe most-reprinted book on the subject
- Read the landmark paper: Phase-shifting point diffraction interferometerCited 134 times
- Go sideways: Common-path interferometerA closely related topic
- Go sideways: InterferometryA closely related topic
📖 Definitions
No dictionary entry for this exact phrase.
🗂️ The subject at a glance
🏆 Landmark papers (most cited)
Phase-shifting point diffraction interferometer
Polarization phase-shifting point-diffraction interferometer
Point diffraction interferometer with adjustable fringe contrast for testing spherical surfaces
Liquid-crystal point-diffraction interferometer for wave-front measurements
Modified point diffraction interferometer for inspection and evaluation of ophthalmic components
Liquid-crystal point-diffraction interferometer
Infrared point-diffraction interferometer
Analysis of diffraction wavefront in visible-light point-diffraction interferometer
🆕 Influential since 2022
Improved phase-shifting method for pinhole point diffraction interferometer based on a precise driving of the substrate
System design and error correction of simultaneous phase-shifting point-diffraction interferometer for dynamic wavefront detection with 400 mm aperture
Single shot point-diffraction interferometer by a plate beamsplitter
Positioning of diffuse metallic target with a point diffractive interferometer
Concept validation of a high dynamic range point-diffraction interferometer for wavefront sensing in adaptive optics
📚 Books worth reading
- 📕Liquid crystal point diffraction interferometerCarolyn Regan Mercer · 1995
- 📕A phase-stepped point diffraction interferometer using liquid crystalsCarolyn R. Mercer · 1995
- 📕A phase-stepped point diffraction interferometer using liquid crystalsCarolyn Regan Mercer · 1995
- 📕Defocus measurement using a liquid crystal point diffraction interferometerCarolyn R. Mercer · 1994
- 📕Defocus measurement using a liquid crystal point diffraction interferometerCarolyn Regan Mercer · 1994
Ranked by number of editions on Open Library, a rough measure of how lasting a book is.
🔗 Related topics
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- Phase-shifting interferometry Phase-shifting interferometry (PSI) is an optical metrology technique for measuring surface topography and wavefront shape to sub-nanometre precision.…
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- Wavefront In physics, the wavefront of a time-varying wave field is the set (locus) of all points having the same phase. The term is generally meaningful only for…