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Optical Engineering

Phase-noise-limited accuracy of distance measurements in a frequency-modulated continuous-wave LIDAR with a tunable twin-guide laser diode
Author(s): Thomas H. Ebben; David L. Begley; Robert G. Marshalek
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Paper Abstract

The realization of a coherent frequency-modulated continuous-wave LIDAR aimed for the accurate measurement of short distances employing a distributed feedback tunable twin-guide laser diode is demonstrated. Theoretical calculations on the ultimate limits in accuracy of distance measurements as determined by the laser phase noise are carried out. A relative accuracy of 8x 10-5 (8 μm) for a single-shot measurement has been achieved at a distance of 10 cm, which is significantly better than expected from the laser linewidth. The results presented here prove the predictions calculated from theory.

Paper Details

Date Published: 1 March 1995
PDF: 8 pages
Opt. Eng. 34(3) doi: 10.1117/12.190442
Published in: Optical Engineering Volume 34, Issue 3
Show Author Affiliations
Thomas H. Ebben, Ball Aerospace Systems Group (United States)
David L. Begley, Ball Aerospace Systems Group (United States)
Robert G. Marshalek, Ball Aerospace Systems Group (United States)

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