海水中不同盐分水溶液对光的透射特性研究  

Research on Light Transmission Characteristics of Some Inorganic Salts in Seawater

作　　者：翟聪聪[1] 韩雪云[1] 彭玉峰[1] 张毅[1] 赵馨艺 

机构地区：[1]河南师范大学物理与电子工程学院,河南新乡453007

出　　处：《激光与光电子学进展》2015年第1期43-48,共6页Laser & Optoelectronics Progress

基　　金：国家自然科学基金(61077037)

摘　　要：海水是一个复杂的多组分体系,其包含各种有机的、无机的、溶解的和悬浮的物质。海水中溶解物质的主要成分是无机盐,如Na Cl、Mg Cl2、KCl、Na HCO3和Mg SO4等,这些成分对水下激光传输质量产生很大的影响。为了进一步了解海水的光学特性,分别测量了Na Cl、Mg Cl2、KCl、Na HCO3和Mg SO4各自的水溶液在不同浓度时相应的透射率。实验通过用紫外-可见-红外分光光度计,分别测量各溶解物质水溶液的透射光谱。再利用波长为450、532、633 nm激光分别研究了各种盐分水溶液的光透射特性,对实验所得的数据进行一阶指数的曲线拟合,通过作图分析得出在所配备的溶液浓度范围内透射率随浓度减小而增大的结论。相同传输距离、不同浓度水溶液对光的透射特性影响不同,希望所研究的结果能对水下激光目标探测以及激光在海水中通信有一定的参考价值。Seawater is a complex system, which involves variety of organic, inorganic, dissolved and suspended substances. However, the main components in seawater are the inorganic salt, such as NaCI, MgC12, KCI, NaHCO3, MgSO4, so on. These elements have a big influence on laser＇s transmission underwater. To further understand the optical properties of seawater, the transmittance in these salt waters with different concentrations of salt is measured. The transmission spectra of dissolved substance solution is measured by ultraviolet-visible-infrared spectrophotometer. The transmission characteristics of different salt waters are studied by using the wavelength of 450, 532, 633 nm lasers. Then a first-order exponential curve is gotten from experimental data, which shows the relationship between transmittance and the conductivity in different solute concentrations. From the figures, a conclusion that transmittance decreases with the increasing of concentration is gotten. With the same transmission distance and different concentrations, the attenuation characteristics of light are different. The work is hoped to be helpful for the research about underwater target detection and laser communication in the sea.

关 键 词：海洋光学 激光 无机盐 透射率 光谱 

分 类 号：O433.51[机械工程—光学工程]