【摘 要】
：
Aiming at the problem of underwater polarized laser scattering caused by underwater suspended particles, the equivalent spherical particle Mie scattering theory simulation method is used to study the polarization characteristics of underwater scattered li
【机 构】
：
SchoolofMarineScienceandTechnology,NorthwesternPolytechnicalUniversity,Xi'an710000,China
【出 处】
：
OptoelectronicsLetters
论文部分内容阅读
Aiming at the problem of underwater polarized laser scattering caused by underwater suspended particles, the equivalent spherical particle Mie scattering theory simulation method is used to study the polarization characteristics of underwater scattered light. The relationship between underwater suspended particle characteristics and optical characteristics is analyzed, and the effects of particle size, polarization characteristics of incident light, and angle of incidence on the degree of polarization of forward and backward scattering light are studied. The results show that: When the incident light is natural light, the degree of polarization of scattered light is very low at the forward-scattering angle, which increases with the increase of the scattering angle, but changes frequently with the increase of the particle size. When the incident light is linearly polarized, the degree of linear polarization of the scattered light is related to the azimuth Angle. The degree of circular polarization is largely unaffected by particle size.
其他文献
研究了飞秒脉冲与聚甲基丙烯酸甲酯(PMMA)相互作用后产生光谱超连续的现象。采用飞秒激光脉, 波长为800 nm,频率为1 kHz, 脉冲能量密度为1012 W/cm2在PMMA中成丝, 产生渐变超连续光谱即从连续白光逐渐变为抽运光。发现当飞秒脉冲在PMMA体内在所成丝中会出现渐变, 以及在等离子丝中光场横向的环状结构和出现渐变白光光谱。实验发现, 激光照射时间对成丝影响显著; 飞秒激光脉冲在PMMA中的成丝的过程具有光折变特性。
Large area and uniform monolayer
A 2×2 cross/bar polymer electro-optic (EO) routing switch is proposed, which is composed of two passive channel waveguides and two active EO polymer microrings with bending radius of only 13.76 μm. Detailed structure, theory and formulation are provided t
The phase shifts of the extinction and refractive index gratings to the illumination pattern are revealed in doped polymethyl methacrylate (PMMA). The dynamic process of these shifts is studied via two-wave coupling at 351 nm. It is shown that these shift
运用广义洛伦兹-米散射理论(GLMT)研究了高阶矢量贝塞尔涡旋波束的单球形气溶胶粒子的散射特性,将直角坐标系下沿 z轴方向传播的贝塞尔波束的电磁场强度各分量表达式转化成球坐标系下各个分量的表达式,使用GLMT中的积分局部近似法计算贝塞尔涡旋波束的波束因子,进而计算在轴入射的高阶矢量贝塞尔涡旋波束的单球形气溶胶粒子散射。以硝酸铵球形粒子为例,通过数值计算,讨论了不同拓扑荷数和半圆锥角矢量贝塞尔涡旋波束与气溶胶粒子作用的微分散射截面随散射角变化的分布,以及消光截面、散射截面和
Near-infrared spectroscopy (NIRS) can provide the hemodynamics information based on the hemoglobin concentration representing the blood oxygen metabolism of the cerebral cortical, which can be deployed for the cerebral function study. However, NIRS-based
日本松下电子工业公司半导体研究所和富士通研究所最近分别试制成将AlGaAs半导体激光器和高频调制电路集成在一块GaAs基片上的光电子集成电路(OEIC)。前者用作光盘驱动器的光源，用800兆赫对激光进行调制,后者作为光通信的光源，可用于吉比特/秒的信号传输。
The stable multicast flow aggregation (MFA) problem in internet protocol (IP) over optical network under the dynamical scenario is studied. Given an optical network topology, there is a set of head ends and access routers attached to the optical network,
本文在逐渐混合模型的基础上,提出更为简化的瞬时混合模型,对CO2混合气动激光的非平衡流进行了大量的数值计算。研讨了速度、温度、组分和辐射场对激光性能的影响,给出了激光性能随有关重要参数的变化规律。
研制了适用于产生空气超声相位光栅的大功率高频超声换能器，采用位移灵敏接收器，在换能器发射面前方适当位置加声匹配器以加强声场干涉提高发射方向性，获得了明显的激光空气超声声光偏转效应。可应用于风洞试验中测量空气旋涡流场参量.