光学学报, 2017, 37 (6): 0601005, 网络出版: 2017-06-08
拓扑荷数对拉盖尔-高斯涡旋光浑浊水下传输的影响 下载: 599次
Influence of Topological Charge on Turbid Underwater Propagation of Laguerre-Gaussian Vortex Beams
海洋光学 水下激光 涡旋光 浑浊水体 拓扑荷数 oceanic optics underwater laser vortex beams turbid water topological charge
摘要
以高斯光作为参考光, 实验研究了携带不同拓扑荷数的拉盖尔-高斯(LG)涡旋光在浑浊水下的传输行为。结果表明,水体较浑浊(衰减长度不大于0.118 m)时, 拓扑荷数较大的LG光束具有更强的水下传输能力; 对于透射光束的能量密度分布而言, 传输距离决定最佳拓扑荷数, 与水体浑浊程度无关。该实验方法和测量结果对LG涡旋光在水下光通信和水下目标探测等领域的应用具有潜在的指导意义和工程价值。
Abstract
The turbid underwater propagation of Laguerre-Gaussian (LG) vortex beams is investigated experimentally with different topological charges, and Gaussian beams are used as the reference light. Results show that LG beams with large topological charge have strong underwater propagation capability when water is relatively turbid (the attenuation length is not higher than 0.118 m). With respect to the energy density distribution of the transmission beams, the transmission distance determines the optimal topological charge, and it is independent of the water turbidity. The experimental method and measured results have potential guiding significance and engineering value for the applications of LG vortex beams in underwater optical communication, underwater target detection and other fields.
彭波, 钟昆, 李中云. 拓扑荷数对拉盖尔-高斯涡旋光浑浊水下传输的影响[J]. 光学学报, 2017, 37(6): 0601005. Peng Bo, Zhong Kun, Li Zhongyun. Influence of Topological Charge on Turbid Underwater Propagation of Laguerre-Gaussian Vortex Beams[J]. Acta Optica Sinica, 2017, 37(6): 0601005.