产生针状光束的灵活方法及其在光学连贯断层扫描中的应用
Jingjing Zhao1, Yonatan Winetraub1,2,3,4, Lin DU5
1Department of Structural Biology, Stanford University School ofMedicine, Stanford, California 94305, USA.
Optica
|June 7, 2023
概括
研究人员开发了一种通用方法,以创建长焦深度 (DOF) 的针状光束 (NBs),以改进显微镜. 这种灵活的技术可以提高像光连贯断层扫描 (OCT) 等系统中的成像分辨率.
科学领域:
- 光学和光子学 在光学和光子学.
- 生物医学成像技术 生物医学成像技术
背景情况:
- 针状光束 (NBs) 提供了扩展的焦点深度 (DOF),这对于高分辨率显微镜至关重要.
- 现有的生成NB的方法往往不灵活,难以实施.
- 为了推进显微镜应用,需要一种通用且可适应的NB生成技术.
研究的目的:
- 开发一个通用和灵活的平台,用于生成定制的针状梁 (NBs).
- 为了能够精确控制NB参数,如长度,直径和轴向强度.
- 为了证明这些NBs在增强光学连贯性断层扫描 (OCT) 成像中的应用.
主要方法:
- 开发一个空间多重化的相位模式,用于生成多个,距离紧密的轴焦点.
- 利用这种模式作为设计各种可调节属性的NB的通用平台.
- 将生成的NB集成到光连贯断层扫描 (OCT) 系统中.
主要成果:
- 成功创建具有可控制的长度,直径,均的轴强度和次衍射极限特征的NB.
- 在使用新型NBs的光连贯断层扫描 (OCT) 系统中证明了DOF的扩展.
- 在很大的深度范围内实现了人类表皮,皮肤-表皮结,Drosophila幼虫心跳的高分辨率成像.
结论:
- 开发的空间复杂相位模式为生成定制的针状光束 (NBs) 提供了通用和灵活的方法.
- 这种技术显著提高了像OCT这样的成像系统的焦点深度 (DOF).
- 改进的成像能力使得生物结构和动态的详细可视化能够在更深的深度上进行.
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