Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • Chinese Optics Letters
  • Vol. 20,
  • Issue 10,
  • pp. 103602-
  • (2022)

Broadband angular momentum cascade via a multifocal graphene vortex generator

Not Accessible

Your library or personal account may give you access

Abstract

Light beams carrying orbital angular momentum (OAM) have inspired various advanced applications, and such abundant practical applications in turn demand complex generation and manipulation of optical vortices. Here, we propose a multifocal graphene vortex generator, which can produce broadband angular momentum cascade containing continuous integer non-diffracting vortex modes. Our device naturally embodies a continuous spiral slit vortex generator and a zone plate, which enables the generation of high-quality continuous vortex modes with deep depths of foci. Meanwhile, the generated vortex modes can be simultaneously tuned through incident wavelength and position of the focal plane. The elegant structure of the device largely improves the design efficiency and can be fabricated by laser nanofabrication in a single step. Moreover, the outstanding property of graphene may enable new possibilities in enormous practical applications, even in some harsh environments, such as aerospace.

© 2022 Chinese Laser Press

PDF Article
More Like This
Graphene-based metamaterial transmitarray antenna design for the generation of tunable orbital angular momentum vortex electromagnetic waves

Zan Kui Meng, Yan Shi, Wen Yue Wei, Ying Zhang, and Long Li
Opt. Mater. Express 9(9) 3709-3716 (2019)

Orbital angular momentum mode detection of the combined vortex beam generated by coherent combining technology

Tao Yu, Hui Xia, Wenke Xie, and Yiming Peng
Opt. Express 28(24) 35795-35806 (2020)

Two-dimensional tunable orbital angular momentum generation using a vortex fiber

Youchao Jiang, Guobin Ren, Ya Shen, Yao Xu, Wenxing Jin, Yue Wu, Wei Jian, and Shuisheng Jian
Opt. Lett. 42(23) 5014-5017 (2017)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved