Performance of a solid-state frequency-shifted  feedback laser in optical ranging

C. Ndiaye; T. Hara; H. Ito

doi:10.2971/jeos.2009.09010

Journal of the European Optical Society - Rapid publications, Vol 4 (2009)

Performance of a solid-state frequency-shifted feedback laser in optical ranging

C. Ndiaye, T. Hara, H. Ito

Abstract

The performance of a frequency-shifted feedback laser (FSFL) using a Nd:YVO4 crystal as gain medium was investigated as light source in high accuracy optical ranging based on optical-frequency domain reflectometry (OFDR). The FSFL generates a comb of chirped frequency components over a bandwidth of 45GHz with chirp rates of 3.8×1017Hz/s. In OFDR, distance accuracies better than 25um at a data measurement time of 2ms were demonstrated at a standoff distance of 5m. The results show that the FSFL is a promising light source for high accuracy, high speed 3D measurement applications.

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