Numerical Simulation for Coherent and Partially Coherent Beam Propagation through Atmospheric Turbulence
QIAN Xian-Mei1, ZHU Wen-Yue1, WANG An-Ting2, GU Chun2, RAO Rui-Zhong1
1The Key Laboratory of the Atmospheric Composition andOptical Radiation of Chinese Academy of Sciences, Chinese Academy ofSciences, Hefei 2300312Anhui Key Laboratory of Optoelectronic Science and Technology,University of Science and Technology of China, Hefei 230026
Numerical Simulation for Coherent and Partially Coherent Beam Propagation through Atmospheric Turbulence
QIAN Xian-Mei1, ZHU Wen-Yue1, WANG An-Ting2, GU Chun2, RAO Rui-Zhong1
1The Key Laboratory of the Atmospheric Composition andOptical Radiation of Chinese Academy of Sciences, Chinese Academy ofSciences, Hefei 2300312Anhui Key Laboratory of Optoelectronic Science and Technology,University of Science and Technology of China, Hefei 230026
Propagation properties of coherent and partially coherent beams in atmospheric turbulence are investigated respectively by using numerical simulation. It is found that a partially coherent beam has a spreading larger than a coherent beam. However, from the point view of relative beam spreading and intensity scintillation, a partially coherent beam is less affected than the corresponding coherent beam, which may be the most important virtue of partially coherent beams that could be utilized to improve the performance of laser engineering. The beam wandering is almost independent of the degree of the source coherence. More aperture averaging occurs when the beam becomes more coherent.
Propagation properties of coherent and partially coherent beams in atmospheric turbulence are investigated respectively by using numerical simulation. It is found that a partially coherent beam has a spreading larger than a coherent beam. However, from the point view of relative beam spreading and intensity scintillation, a partially coherent beam is less affected than the corresponding coherent beam, which may be the most important virtue of partially coherent beams that could be utilized to improve the performance of laser engineering. The beam wandering is almost independent of the degree of the source coherence. More aperture averaging occurs when the beam becomes more coherent.
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2010, Vol. 27 
