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Polygons Effect of Facet Flatness Variations on Jitter

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Polygons Effect of Facet Flatness Variations on Jitter

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The flatness of polygon facets will have an impact both on the aberrations in the beam as well as the pointing of the beam. This pointing error results in velocity variations across the scan. A flat facet will produce a reflected beam that moves angularly at twice the rotation rate of the polygon. Variations from flatness will cause the beam to be displaced in angle from the ideal position

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