| Issue |
J. Eur. Opt. Soc.-Rapid Publ.
Volume 4, 2009
|
|
|---|---|---|
| Article Number | 09010 | |
| Number of page(s) | 4 | |
| DOI | https://doi.org/10.2971/jeos.2009.09010 | |
| Published online | 17 March 2009 | |
Regular papers
Performance of a solid-state frequency-shifted feedback laser in optical ranging
Graduate School of Engineering, Tohoku University, JAPAN
a galas@ecei.tohoku.ac.jp
b tkfm@ecei.tohoku.ac.jp
c h-ito@ecei.tohoku.ac.jp
Received:
10
December
2008
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 45 GHz with chirp rates of 3.8×1017 Hz/s. In OFDR, distance accuracies better than 25 µm at a data measurement time of 2 ms were demonstrated at a standoff distance of 5 m. The results show that the FSFL is a promising light source for high accuracy, high speed 3D measurement applications.
Key words: frequency-shifted feedback laser / solid-state laser / optical ranging / distance measurement
© The Author(s) 2009. All rights reserved.
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