High resolution stimulated Brillouin scattering lidar using Galilean focusing system for detecting submerged objects

To improve the performance of stimulated Brillouin scattering (SBS) lidar system, a new focusing system based on Galilean telescope was designed, and the influences of focusing system on the resolution of SBS lidar were investigated theoretically and experimentally. The experiments for real-time det...

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Bibliographic Details
Published inOptics communications Vol. 427; pp. 27 - 32
Main Authors Yuan, Dapeng, Xu, Jin, Liu, Zhe, Hao, Shiguo, Shi, Jiulin, Luo, Ningning, Li, Shujing, Liu, Juan, Wan, Shengpeng, He, Xingdao
Format Journal Article
LanguageEnglish
Published Elsevier B.V 15.11.2018
Subjects
Brillouin lidar
Detection distance
Lidar resolution
Object detection
SBS
Brillouin lidar
Lidar resolution
SBS
Detection distance
Object detection
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Summary:To improve the performance of stimulated Brillouin scattering (SBS) lidar system, a new focusing system based on Galilean telescope was designed, and the influences of focusing system on the resolution of SBS lidar were investigated theoretically and experimentally. The experiments for real-time detecting submerged object were carried out in a 100 m-long water pool. The results indicate that the focusing system can improve greatly the resolution of SBS lidar system to 0.1 m at the detecting distance of 5 m, and less than 0.5 m within the detection distances of 30 m. The attenuation coefficient of water was 0.38 m−1, and the detection distance of SBS lidar in this experiment exceeds 11 attenuation lengths. The experimental results agree well with the theoretical simulations.
ISSN:0030-4018
1873-0310
DOI:10.1016/j.optcom.2018.06.025