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Updated: Jun 6, 2025

Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements

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Published on: February 28, 2016

悬浮颗粒的极化光学特性,通过极化 Scheimpflug 激光雷达系统在水中进行测量

Ziwang Li, Hongwei Zhang, Guangyao Dai

|November 22, 2024

概括

这项研究展示了一种极化激光雷达系统,能够根据其极化特性区分水中的悬浮粒子. 该方法有效地分析向后散射光,以表征粒子大小和形状,用于海洋检测.

科学领域:

海洋光学海洋光学
颗粒物物质的表征颗粒物质的表征
利达尔技术是利达尔的技术.

背景情况:

悬浮粒子的极化光学特性对于海洋检测和模拟至关重要.
极化激光雷达提供了一种有效的手段来确定粒子的大小,形状和度.

研究的目的:

为测量激光雷达信号偏振提供一个简洁的光学方法.
使用典型悬浮颗粒分析颗粒偏振信息.

主要方法:

实验室实验使用极化Scheimpflug激光雷达系统.
在0°,45°,90°和135°的角度测量激光雷达信号偏振.
使用球形和不规则的二氧化颗粒作为标记物.

主要成果:

基于偏振光学特性,证明了悬浮粒子的有效区分.
对反向散射光的分析揭示了粒子类型之间的差异.
该系统在实验室环境中成功分类悬浮粒子.

结论:

开发的极化激光雷达方法可以有效地分类悬浮粒子.
这种方法有可能用于船载海洋激光雷达应用.
该系统还可以与潜水平台集成,用于现场测量.

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相关概念视频

Measuring Reaction Rates

Measuring Reaction Rates

Polarimetry finds application in chemical kinetics to measure the concentration and reaction kinetics of optically active substances during a chemical reaction. Optically active substances have the capability of rotating the plane of polarization of linearly polarized light passing through them—a feature called optical rotation. Optical activity is attributed to the molecular structure of substances. Normal monochromatic light is unpolarized and possesses oscillations of the electrical...