光学
小型化
暗场显微术
角动量
衍射
显微镜
物理
失真(音乐)
共焦显微镜
共焦
材料科学
光电子学
纳米技术
CMOS芯片
量子力学
放大器
作者
Jian Liu,Zijie Hua,Chenguang Liu
出处
期刊:Optics Letters
[The Optical Society]
日期:2021-11-08
卷期号:46 (22): 5591-5591
被引量:7
摘要
This study proposes a dark-field confocal microscopy (DFCM) based on fiber-mode excitation-assisted orbital angular momentum annular beam generation with a two-mode fiber to avoid diffraction distortion. The application of optical fibers compresses the DFCM volume, providing new ideas for system miniaturization. System adjustment difficulty is reduced and feasibility is verified by imaging 2D and 3D samples. High imaging contrast is achieved by fully blocking the reflected light and annular illumination with a steady central dark-spot within a propagation distance of 3 m. The application of our scheme can be further extended to detect subsurface defects in optical components and high-contrast biological imaging.
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