Near-infrared metalens for high-resolution and deep focus optical coherence tomography

被引：4

作者：

Haerinia, Mohammad ^{[1
]}

Zheng, Bowen ^{[1
]}

Hutchins, Aaron ^{[2
]}

Tang, Hong ^{[1
]}

Li, Hang ^{[1
]}

Dong, Yunxi ^{[1
]}

Guo, Wei ^{[2
]}

Zhang, Hualiang ^{[1
]}

机构：

[1] Univ Massachusetts Lowell, Dept Elect & Comp Engn, Lowell, MA 01854 USA

[2] Univ Massachusetts Lowell, Dept Phys & Appl Phys, Lowell, MA 01854 USA

来源：

AIP ADVANCES | 2022年 / 12卷 / 12期

基金：

美国国家科学基金会;

关键词：

REFLECTION;

D O I：

10.1063/5.0131170

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

High-resolution endoscopic optical imaging is a crucial technique in biological imaging to examine the inside organs. There is a trade-off between lateral resolution and depth of focus in such applications. Traditional Optical Coherence Tomography provides an increased depth range but falls short of desired resolution. The combination of both higher resolution and larger imaging depth of focus of metalens can improve the clinical utility of endoscopic optical imaging. In this work, we designed, analyzed, and fabricated a 500 mu m diameter metalens operating at 1300 nm to achieve high resolution and large imaging depth of focus, therefore, addressing this need. The full width at half maximum and depth of focus for the proposed metalens are 3.10 and 286 mu m, respectively. (C) 2022 Author(s).

引用

页数：7

共 24 条

[1] Aberration-Free Ultrathin Flat Lenses and Axicons at Telecom Wavelengths Based on Plasmonic Metasurfaces [J].