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通过度扭曲:光携带轨道角动量的传播通过复杂的散射介质传播
Fatima Khanom1, Nawal Mohamed1, Ivan Lopushenko2
1College of Engineering and Physical Sciences, Aston University, Birmingham, B4 7ET, UK.
Scientific reports
|September 5, 2024
概括
结构激光束中的轨道角动量 (OAM) 在通过复杂的散射介质传播时保持不变. 这一发现通过模拟和实验得到证实,为光学传感和通信开辟了新的途径.
科学领域:
- 光学和光子学 在光学和光子学.
- 激光物理 激光物理
- 波浪传播 波浪传播
背景情况:
- 结构化的旋转激光束携带轨道角动量 (OAM),这是从它们的空间结构中得出的属性.
- OAM通常在均质介质中保存,但其在复杂的散射环境中的行为不太了解.
- 拉盖尔-高斯 (Laguerre-Gaussian,LG) 波束是光学研究中常见的一种波束.
研究的目的:
- 为了研究通过复杂的多重散射介质传播的结构激光束OAM的保存.
- 分析的环境对光的旋转和轨道角运动量组成部分的影响.
- 探索OAM保存在先进技术中的潜在应用.
主要方法:
- 通过的多重散射介质通过具有不同拓电荷的拉盖尔-高斯 (Laguerre-Gaussian,LG) 束的实验传播.
- 开发和应用内部蒙特卡罗模拟来模拟光散射.
- 将模拟结果与实验观测结果进行比较,以验证发现.
主要成果:
- 发现LG光束的轨道角动量 (OAM) 在通过复杂的散射介质传播时保持不变.
- 观察到明显的相位转移,表明"光的扭曲"现象.
- 蒙特卡洛模拟显示与实验数据有很强的一致性,证实了OAM的保护.
结论:
- 结构激光束的轨道角动量 (OAM) 即使在复杂的多重散射环境中也能稳定地保持.
- 这种OAM的保存表明在光学传感,通信和遥感领域的应用有很大的潜力.
- 这项研究验证了使用蒙特卡洛模拟来预测的介质中的光传播.
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