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Journal Articles Applied optics Year : 2013

Direct-detection wind lidar operating with a multimode laser

Didier Bruneau
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Franck Montmessin
Jacques Pelon

Abstract

A direct-detection wind lidar that operates with a multimode laser has been developed and tested. The instrument exploits the light backscattered by particles using a Mach-Zehnder interferometer with an optical path difference matched to the free spectral range of the laser longitudinal modes. In addition to requiring no monomodal emission, the system requires no frequency locking between the interferometer and the laser. We report laboratory and atmospheric measurements that show that the lidar is capable of measuring the radial wind velocity with a systematic error lower than 1 ms(-1) and a random error lower than 2 ms(-1) for a signal-to-noise ratio of 100. The development is motivated by the possibility to probe wind with a compact system in planetary atmospheres.
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Dates and versions

hal-00850024 , version 1 (02-08-2013)

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Didier Bruneau, Frédéric Blouzon, Joseph Spatazza, Franck Montmessin, Jacques Pelon, et al.. Direct-detection wind lidar operating with a multimode laser. Applied optics, 2013, 52 (20), pp.4941-4949. ⟨10.1364/AO.52.004941⟩. ⟨hal-00850024⟩
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