水下气泡幕消光特性研究  

Light extinction properties of underwater bubble films

作　　者：马治国[1,2] 王江安[1] 余扬[2] 石晟玮[2] 

机构地区：[1]海军工程大学电子工程学院,武汉430033 [2]海军工程大学兵器工程系,武汉430033

出　　处：《激光技术》2009年第1期18-20,共3页Laser Technology

摘　　要：为了研究水下气泡幕对激光传输特性的影响,采用米氏散射理论对水下气泡的消光截面和消光系数进行了计算,并在此基础上采用朗伯特-比尔定律对水下气泡幕的消光特性进行了理论分析和实验验证,取得了不同密度、不同厚度以及处于不同位置处气泡幕的透射光功率数据。结果表明,透过气泡幕的光功率随气泡密度以及气泡幕厚度呈指数衰减,而与气泡幕所处的位置没有密切关系。这一结论对舰船气泡尾流的光学探测是有帮助的。In order to study the transmission properties of laser in bubble films, the extinction section and the extinction efficiency of bubbles were calculated by means of Mie scattering theory. The light extinction properties of underwater bubble films were analyzed theoretically and validated in laboratory based on the Lambert-Beer law. The laser power transmitted through bubble film of different density, thickness, and distances was measured with a power meter. The results indicated that the power decayed exponentially with the density and the thickness, but had no relation to the distance between the film and the detector. The conclusions are helpful for optical detection of bubble wakes of ships.

关 键 词：散射 消光 米氏理论 气泡 

分 类 号：O436.2[机械工程—光学工程]