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SMV-2020-29: An optical radiation source assembly with an optional coherence length
Lazar, Josef ; Buchta, Zdeněk ; Pikálek, Tomáš
This laser system combining three light sources with various coherence lengths has been developed for advanced interferometry techniques based on Twyman-Green interferometer inspecting complex optical setups with a sequence of reflecting optical surfaces. It introduces a unique concept of reduction of unwanted “dead fringes” generated by multiple reflections. It is introduced into quality control by an optical manufacturing company Meopta-optika and production of a few more is being prepared.

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