Abstract
An optical low-coherence reflectometer is presented that uses a fiber Michelson
interferometer with a rotating cube to generate rapid depth scans at a high
repetition rate. A folded optical path geometry allows the reference arm to
scale up the scan range, scan speed, and scan repetitiveness. Thickness measurements
with a repetitiveness of 384 Hz and a longitudinal scanning
speed of 21 m/s in air over a range of mm are demonstrated.
© 1997 Optical Society of America
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