1 March 1995 Phase-noise-limited accuracy of distance measurements in a frequency-modulated continuous-wave LIDAR with a tunable twin-guide laser diode
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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.
Thomas H. Ebben, David L. Begley, Robert G. Marshalek, "Phase-noise-limited accuracy of distance measurements in a frequency-modulated continuous-wave LIDAR with a tunable twin-guide laser diode," Optical Engineering 34(3), (1 March 1995). https://doi.org/10.1117/12.190442
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