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A spatial filter is an optical device which uses the principles of Fourier optics to alter the structure of a beam of light or other electromagnetic radiation, typically coherent laser light. Spatial filtering is commonly used to "clean up" the output of lasers, removing aberrations in the beam due to imperfect, dirty, or damaged optics, or due to…
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| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Spatial filter | is a | optical device which uses the principles of Fourier optics to alter the structure of a beam of light or other electromagnetic radiation | 0.90 | text |
| Spatial filter | see also | Köhler | 0.60 | section |
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