Phase-noise-limited accuracy of distance measurements in a             frequency-modulated continuous-wave LIDAR with a tunable twin-guide laser diode

Thomas H. Ebben; David L. Begley; Robert G. Marshalek

doi:10.1117/12.190442

1 March 1995 Phase-noise-limited accuracy of distance measurements in a frequency-modulated continuous-wave LIDAR with a tunable twin-guide laser diode

Thomas H. Ebben, David L. Begley, Robert G. Marshalek

Author Affiliations +

Optical Engineering, Vol. 34, Issue 3, (March 1995). https://doi.org/10.1117/12.190442

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.

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Thomas H. Ebben, David L. Begley, and 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

Published: 1 March 1995

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