概括
超连续 (SC) 激光器在大气流中传播的方式与连贯激光器不同. SC激光器表现出较低的闪光度,但相似的光束流浪,对于自由空间光通信至关重要.
科学领域:
- 光学和光子学 在光学和光子学.
- 大气物理学 大气物理学
- 激光物理 激光物理
背景情况:
- 超连续 (SC) 激光源在功率和光束质量方面取得了进步.
- 它们在大气环境中的传播还不太清楚.
- 大气动荡显著影响激光束的特性.
研究的目的:
- 为了研究SC激光的大气传播行为.
- 量化分析强度波动,闪指数和光束在8公里的漫游.
- 将实验数据与高斯-谢尔模型 (GSM) 模拟进行比较.
主要方法:
- 进行了8公里长的实地实验,研究SC激光的传播.
- 在各种SC波长测量强度波动和闪指数.
- 分析了光束漫游统计数据.
- 使用高斯-谢尔模型 (GSM) 进行了数值模拟.
主要成果:
- 与完全连贯激光相比,SC激光显示出明显较低的闪指数.
- 闪指数随着远场的离轴距离的增加而增加.
- SC激光闪类似于单色部分连贯束 (连贯长度~mm) 的闪.
- 对SC激光器的光束漫游统计数据与单色连贯光束相似,独立于波长和连贯性.
结论:
- SC激光器在减轻大气流中的闪方面比连贯激光器具有优势.
- 对于SC激光器来说,光束流动在很大程度上不受波长和空间连贯性的影响.
- 这些发现支持在自由空间光通信和对策中部署SC激光器.
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