偏振器
光学
轴棱锥
极化(电化学)
材料科学
径向极化
平面的
栅栏
线极化
光电子学
激光器
物理
激光束
计算机科学
化学
物理化学
双折射
计算机图形学(图像)
激光束质量
作者
Chen Chen,Yiqun Wang,Minwei Jiang,Jian Wang,Jian Guan,Baoshun Zhang,Sheng Wang,Jie Lin,Peng Jin
出处
期刊:Nano Letters
[American Chemical Society]
日期:2020-06-25
卷期号:20 (7): 5428-5434
被引量:49
标识
DOI:10.1021/acs.nanolett.0c01877
摘要
Polarization imaging is an important branch of the microscopy technique that can provide additional information and enhanced contrast. The illumination system of a polarization microscope enables many different polarizations but makes the setup bulky, complicated, and slow. Here, we design and fabricate an ultrathin planar axicon metalens that also enables parallel illumination with different polarizations. Our results reveal a diffraction-limited size and high degree of linear polarization. To verify our approach, we accurately map the polarization angle of an aluminum grating, which is used as a polarizer. Furthermore, we demonstrate that elliptical polarization can be generated without additional design. A single metalens has the same capabilities as a conventional illumination module containing a polarizer, compensator, and rotation-stage/optical modulator. In addition, our device has the potential to enable rapid super-resolution polarization imaging. The new method could be useful in many applications and areas, including, e.g., materials research and biomedicine.
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