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Everything about Optical flat

Extremely flat piece of optical-grade glass

An optical flat is an optical-grade piece of glass lapped and polished to be extremely flat on one or both sides, usually within a few tens of nanometres. They are used with a monochromatic light to determine the flatness of other surfaces, by means of wave interference. Wikipedia →

🧭 Start here: a 6-step reading path

  1. Read the overview: Optical flatA 5-minute orientation
  2. Skim a recent paper: Flat Optical Frequency Comb Generator Based on Integrated Lithium Niobate ModulatorsInfluential work since 2022
  3. Pick up a classic book: Surface Characterization for Computer Disc WafersThe most-reprinted book on the subject
  4. Read the landmark paper: Flat Optics: Controlling Wavefronts With Optical Antenna MetasurfacesCited 291 times
  5. Go sideways: White light interferometryA closely related topic
  6. Go sideways: Bragg planeA closely related topic

📖 Definitions

Noun A disk of high-quality quartz glass having at least one side ground and polished with a deviation in flatness less than 50 nanometers all over, and a surface quality of 5 microfinish or less; used, in an interferometer, to measure the flatness of other surfaces.

🏆 Landmark papers (most cited)

🆕 Influential since 2022

📚 Books worth reading

Ranked by number of editions on Open Library, a rough measure of how lasting a book is.

🔗 Related topics