基于时间光谱的偏振编码用于时空超分辨近场扫描光学显微镜读出

Time-Spectral based Polarization-Encoding for Spatial-Temporal Super-Resolved NSOM Readout.

作者信息

Karelits Matityahu, Mandelbaum Yaakov, Zalevsky Zeev, Karsenty Avi

机构信息

Lev Academic Center, Dept. of Applied Physics/Electro-Optics Eng., Advanced Laboratory of Electro-Optics (ALEO), Jerusalem, 9116001, Israel.

Faculty of Engineering, Bar-Ilan University, Ramat Gan, 5290002, Israel.

出版信息

Sci Rep. 2019 Sep 11;9(1):13089. doi: 10.1038/s41598-019-49721-w.

DOI:10.1038/s41598-019-49721-w

PMID:31511593

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6739407/

Abstract

Detection of evanescent waves through Near-field Scanning Optical Microscopy (NSOM) has been simulated in the past, using Finite Elements Method (FEM) and 2D advanced simulations of a silicon Schottky diode, shaped as a truncated trapezoid photodetector, and sharing a subwavelength pin hole aperture. Towards enhanced resolution and next applications, the study of polarization's influence was added to the scanning. The detector has been horizontally shifted across a vertically oriented Gaussian beam while several E-field modes, are projected on the top of the device. Both electrical and electro-optical simulations have been conducted. These results are promising towards the fabrication of a new generation of photodetector devices which can serve for Time-Spectral based Polarization-Encoding for Spatial-Temporal Super-Resolved NSOM Readout, as developed in the study.

摘要

过去曾使用有限元方法（FEM）对通过近场扫描光学显微镜（NSOM）检测倏逝波进行模拟，模拟对象是一个形状为截顶梯形光电探测器的硅肖特基二极管，并共享一个亚波长针孔孔径进行二维高级模拟。为了提高分辨率和用于未来应用，在扫描中增加了对偏振影响的研究。探测器在垂直取向的高斯光束上水平移动，同时几种电场模式投射在器件顶部。进行了电学和电光模拟。这些结果对于制造新一代光电探测器器件很有前景，这类器件可用于该研究中开发的基于时间光谱的偏振编码，以实现时空超分辨NSOM读出。