Investigation of Quadrate Fresnel Zone Plates Fabricated by Femtosecond Laser Direct Writing

Investigation of Quadrate Fresnel Zone Plates Fabricated by Femtosecond Laser Direct Writing

The circular Fresnel zone plate (FZP) has been extensively used in micro-optics due to its outstanding focusing performance. Despite that, the curved edge of the circular zone has drawbacks limiting its use in terahertz imaging, array generator, and micro/nano-manufacturing. Therefore, a circular st...

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Bibliographic Details
Main Authors: Xiaoyan Sun, Fang Zhou, Lian Duan, Ji-an Duan
Format: Article
Language:English
Published: MDPI AG 2022-08-01
Series:Applied Sciences
Subjects:
quadrate Fresnel zone plate
diffraction performance
phase shift
square focus
femtosecond laser
Online Access:https://www.mdpi.com/2076-3417/12/15/7788

Internet

https://www.mdpi.com/2076-3417/12/15/7788

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