Affiliation:
1. Research Center for Intelligent Chips and Devices, Zhejiang Lab
2. ZJU-Hangzhou Global Scientific and Technological Innovation Center
Abstract
Achromatic performance is crucial for numerous multi-wavelength optical fiber applications, including endoscopic imaging and fiber sensing. This paper presents the design and nanoprinting of a fiber-integrated achromatic diffractive lens within the visible spectrum (450–650 nm). The 3D nanoprinting is achieved by a high-resolution direct laser writing technology, overcoming limitations in the optical performance caused by the lack of an arbitrary 3D structure writing capability and an insufficient feature resolution in the current manufacturing technology for visible light broadband achromatic diffractive lenses. A three-step optimization algorithm is proposed to effectively balance optical performance with writing difficulty. The characterization results demonstrate excellent achromatic focusing performance, paving the way towards the development of nanoprinted flat optical devices for applications such as optical fiber traps, miniature illumination systems, and integrated photonic chips.
Funder
National Key Research and Development Program of China
Natural Science Foundation of Zhejiang Province
Major Scientific Project of Zhejiang Laboratory
Subject
Atomic and Molecular Physics, and Optics