【摘要】 针对水下气泡幕的激光后向散射功率衰减特性,设计了实验系统,采用不同波长、不同发射功率的激光对不同密度、不同厚度、不同距离的气泡幕进行照射,采用激光功率计对后向散射光功率进行测量,并对数据进行了分析。结果表明:蓝绿光的后向散射特性较好;后向散射光功率与发射光功率及气泡幕厚度呈正比;水下气泡幕的激光后向散射特性与气泡密度、气泡幕距离关系密切。更多还原

【Abstract】 An experimental system was designed to study the power attenuation properties of the back-scattering laser from bubble films in water.The powers of back-scattering light from bubble films with various densities,thicknesses,and distances were measured by a power meter with lamp-houses in various wavelengths and outputs.The data were analyzed and the results indicate that the back-scattering properties of 473nm、532nm laser is better,and 635nm laser is worst in the three wavelength 635nm、532nm、477nm.The back-scattering light powers are in direct proportion to the incident light power.The powers have relations with bubble densities,the thicknesses of bubble film and the distance between the laser and the bubble film.更多还原