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3D打印镜头用于垂直光束对接的光学相位阵列的3D打印镜头

Sidra Tul Muntaha^1,2, Ari Hokkanen¹, Mikko Harjanne¹

¹VTT Technical Research Centre of Finland, Espoo, Finland.

3D printing and additive manufacturing

|October 3, 2024

概括

这项研究引入了边缘合的1D光学相位阵列 (OPA) 与集成的聚合镜头用于光束方向. 与商业选择相比,定制3D打印镜头显著改善了光束对接.

科学领域:

光子学和光学工程的工程.
集成光学集成光学集成光学
纳米光子学纳米光子学

背景情况:

光学相位阵列 (OPA) 对于光束转向应用至关重要.
有效的光束聚合对于来自边缘合OPA的外联光是必不可少的.
之前的OPA设计在光束质量和合并方面遇到了限制.

研究的目的:

设计,制造和表征与合镜头集成的边缘合1D OPA.
为了比较商用镜片的性能与定制的3D打印镜片用于光束聚合.
为了展示和分析1D光束转向能力与改进的聚合.

主要方法:

制造两代3μm波导间距的1D OPA (37和512通道) 两代.
结合边缘合波导输出与聚合镜头 (商业直筒形和定制3D打印的形圆柱形).
通过波长调整在1550nm左右进行1D光束转向的实验演示,并分析光束参数.

主要成果:

证明最大光束转向范围大约为30°.
具有特色的聚合性能,与商用镜头产生9.9毫米的雷利范围和7.0mrad (0.4°) 的分歧.
通过3D打印镜头实现了显著改进的聚合效果:40.1mm雷利射程和3.5mrad (0.2°) 的分歧.

结论:

边缘合的1D OPAs与配合镜头相结合,可实现有效的1D光束方向.
定制3D打印的形圆柱形镜头与商业直径镜头相比,提供更好的光束聚合.
开发的OPA系统具有增强的聚合效应,对先进的光学应用有很大的希望.

关键词:

3D打印镜头是一种3D打印镜头.李达尔 (LiDAR) 是一种激光雷达.结合聚合 (collimation) 是一种方法.光学相位阵列的光学相位阵列.光子学是一种光子学.

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