Da-he
LIU (刘大禾)1,Jin-wei SHI (石锦卫)2,Xu-dong
CHEN (陈旭东)2,Min OUYANG (欧阳敏)2,Wen-ping GONG
(弓文平)2,
1.Applied Optics
Beijing Area Major Laboratory, Department of Physics, Beijing Normal
University, Beijing 100875, China；Key Laboratory
of Nondestructive Test (Ministry of Education), Nanchang Hang Kong
University, Nanchang 330063, China; 2.Applied Optics
Beijing Area Major Laboratory, Department of Physics, Beijing Normal
University, Beijing 100875, China;
Abstract：The principle of a lidar based on Brillouin scattering is introduced. The basic physics of the Brillouin lidar is discussed. The applications of the Brillouin lidar in remote sensing of the ocean, such as measurement of the sound speed and the bulk viscosity of water and detecting submerged objects are investigated. An actual Brillouin lidar system is developed. Also, several basic problems related to Brillouin lidar are studied in detail. The attenuation coeffcient of a pulsed laser beam with high pulsed energy in water is investigated; it is helpful to reveal the propagation property of a laser beam in water. The investigations on the threshold value of SBS are made theoretically and experimentally. Finally, a novel phenomena is investigated experimentally, in which Stimulated Raman scattering can be enhanced by stimulated Brillouin scattering.
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