Abstract

Large, inexpensive scanning mirrors for a lidar have been designed and built out of common float glass mirrors and aluminum honeycomb. The flatness of the scanning mirrors has been characterized with a modified Foucault knife-edge test. The peak-to-peak surface slope error over the entire surface of the mirrors was found to be less than 1 mrad, with slope errors of 0.15 mrad over small areas. This performance was sufficient for use of the mirrors in a scanning CO₂ lidar system that uses direct detection.

© 1994 Optical Society of America

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