针对大气环境中粒子浓度对激光传输过程的影响问题，以油雾粒子为研究对象，利用油雾粒子在扩散过程中产生的非均匀环境，进行了偏振激光传输的半实物仿真实验。实验采用532 nm激光器，分别研究了水平线偏振光、45°线偏振光以及左旋圆偏振光在油雾扩散过程中偏振态的变化情况。利用粒度仪对扩散环境进行了量化标定。实验结果表明：在油雾扩散过程中，浓度越高，偏振度变化的随机性越大，圆偏振光的保偏性优于线偏振光。在相同浓度下，0°线偏振光对偏振态的保持性要优于45°线偏振光。在浓度极高的情况下，体积浓度为2 mg/L及其以上时，线偏振光与圆偏振光的保持性趋向一致。
Abstract
Aiming at the influence of particle concentration on the laser transmission process in the atmospheric environment, taking the oil mist particles as the research object, the semi-physical simulation experiment of polarization laser transmission was carried out by using the inhomogeneous environment generated by the oil mist particles during the diffusion process. In the experiment, 532 nm lasers were used to study the polarization state variation of horizontal linearly polarized light, 45° linearly polarized light and left circularly polarized light during oil mist diffusion. The diffusion environment was quantitatively calibrated using the particle size analyzer. The experimental results show that the higher the concentration is, the greater the randomness of the change of polarization, and the polarization-maintaining ability of the circularly polarized light is better than that of the linearly polarized light. At the same concentration, the polarization-maintaining ability of 0°linearly polarized light is better than 45 ° linearly polarized light. In the case of extremely high concentrations, when the volume concentration is 2 mg/L or above, the linearly polarized light tends to coincide with the retention of circularly polarized light.
关键词
非均匀油雾环境 /
浓度 /
偏振态 /
激光传输特性
{{custom_keyword}} /
Key words
inhomogeneous oil-mist environment /
laser transmission characteristic /
polarization state /
concentration
{{custom_keyword}} /
基金
国家863计划；国家973计划；总装预研基金；吉林省科技攻关项目(20150204045GX)
{{custom_fund}}
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
曹先平.不同波长的散射介质后向散射光偏振特性[J].光子学报, 2012, 41(5):609-612.
虞文俊, 顾国华, 杨蔚.基于小波变换的红外偏振图像融合算法[J].激光技术, 2013, 37(3):290-292.
曹汉军, 乔延利, 杨伟峰, 等.偏振遥感图像特性表征及分析[J].量子电子学报, 2002, 19(4):373-378.
白思克, 段锦, 鲁一倬, 等.不同材质的偏振成像特性实验研究[J].应用光学, 2016, 37(4):511-516.
王海华, 孙贤明, 刘万强.偏振光在冰水混合云中的传输特性[J].激光与光电子学进展, 2011, 48(7):070101.
郝增周, 龚芳, 潘德炉, 等.沙尘气溶胶粒子群的散射和偏振特性[J].光学学报, 2012, 32(1):0101002.
姚禄玖, 高钧麟, 肖凯涛, 等.烟幕理论与测试[M].北京:国防工业出版社, 2004:37-41.
战俊彤, 张肃, 付强, 等.油雾浓度对激光偏振度的影响[J].光子学报, 2016, 45(3): 0314006.
张肃, 战俊彤, 白思克, 等.烟雾浓度对偏振光传输
Cao Xianping. Characteristics of degree of polarization of backscattering light in scattering medium at different wavelengths[J].Acta Photonica Sinica, 2012, 41(5):609-612.
Yu Wenjun, Gu Guohua, Yang Wei. Fusion algorithm of infrared polarization images based on wavelet transform[J].Laser Technology, 2013, 37(3):290-292.
Cao Hanjun, Qiao Yanli, Yang Weifeng, et al. Characterization and analysis of the polarization images in remote sensing[J]. Chinese Journal of Quantum Electronics, 2002, 19(4):373-378.
Bai Sike, Duan Jin, Lu Yizhuo, et al.. Experimental study on polarization imaging characteristics of various materials[J].Journal of Applied Optics, 2016, 37(4):511-516.
Wang Haihua, Sun Xianming, Liu Wanqiang. Polarization of light scattering by ice-water mixed clouds in visible regions[J].Laser & Optoelectronics Progress, 2011, 48(7):070101.
Hao Zengzhou, Gong Fang, Pan Delu, et al. Scattering and polarization characteristics of dust aerosol particles[J]. Acta Optica Sinica, 2012, 32(1
{{custom_fnGroup.title_cn}}
脚注
{{custom_fn.content}}
