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宽带光学波束生成使用平面纳米结构梯度指数波相口罩.

Hue Thi Nguyen1,2,3, Rafal Kasztelanic4,5, Adam Filipkowski4,5

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概括

我们创建了一个紧的,纳米结构的梯度索引旋相面罩,用于在红外线中生成光学旋束 (OVB). 这种低成本的设备提供宽带性能,可以与光纤集成.

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科学领域:

  • 光学和光子学 在光学和光子学.
  • 纳米技术纳米技术
  • 材料科学 材料科学 材料科学

背景情况:

  • 光学束 (OVB) 有多种应用,但需要高效的生成方法.
  • 现有的OVB发电机可能是重的或波长范围有限的.
  • 纳米结构的光学元件提供了小型化和新的功能.

研究的目的:

  • 开发一个紧的,宽带的红外光学相口罩.
  • 使用低成本的纳米技术制造方法.
  • 为了证明光学束的有效生成和表征.

主要方法:

  • 使用--酸玻璃棒制造纳米结构的梯度指数旋相面罩.
  • 有效介质理论用于折射率设计的应用.
  • 在1275-1565nm范围内使用二极管激光器进行数值模拟和实验验证.

主要成果:

  • 一个19微米厚的纳米结构面罩成功地将高斯束转换为基本的光学.
  • 在290nm带宽 (1275-1565nm) 上实现了宽带运行.
  • 实验结果证实了通过强度配置,形转换和干扰图的OVB生成.

结论:

  • 一个新的,紧的,平面纳米结构的梯度指数旋相位面罩成功开发.
  • 该设备可以在红外线中高效,宽带地产生光学波束.
  • 与光纤尖端直接集成的潜力简化了OVB生成系统和操作.