对光聚合物固化进行全面的光学监测,用于衍射元件的增材制造
Optics express
|June 14, 2025
概括
研究人员开发了一个全光学监测平台用于光聚合,使得在衍射光学元件制造过程中精确地在现场测量折射率变化. 这项技术可以实现可定制,低成本的DOE,具有可调节的光学特性.
科学领域:
- 光学和光子学 在光学和光子学.
- 材料科学 材料科学 材料科学
- 增材制造 增材制造 增材制造
背景情况:
- 衍射光学元件 (DOE) 有多种应用,包括光束成型和增强现实.
- 通过光聚合增材制造提供了一种成本效益高的方法来创建可定制的DOE.
- 监测光聚合物固化的动态和空间演变对于制造高质量的DOE至关重要.
研究的目的:
- 开发和验证一个全光学监测平台,用于光聚合物固化过程的现场表征.
- 为了研究在DOE制造过程中折射率的时空演变.
- 通过局部折射率变化来证明制造具有可调节性质的DOE的潜力.
主要方法:
- 采用聚焦线折射率显微镜 (FLRIM) 技术,该技术基于动态折射率测量的总内部反射.
- 通过传输相位测量,采用侧面剪切干扰度显微镜 (LIM) 技术进行定量二维结构分析.
- 使用紫外线数字微镜装置 (DMD) 投影仪进行像素化的光聚合和局部固化.
主要成果:
- 在光聚合物固化过程中成功监测了现场时空折射率演变.
- 量化分析2D结构并传输具有高灵敏度的相位信息.
- 通过控制局部折射率修改,证明在单个光聚合物上制造DOE的可行性.
结论:
- 拟议的全光学监测平台为基于光聚合物的DOE制造提供了必要的现场表征.
- 调整局部折射率变化的能力为先进的单材料DOE开辟了可能性.
- 这项技术促进了复杂光学元件的低成本,可定制的制造.
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