Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Measurement of the topological charge and index of vortex vector optical fields with a space-variant half-wave plate

Abstract

Vortex vector optical fields (VVOFs) refer to a kind of vector optical field with an azimuth-variant polarization and a helical phase, simultaneously. Such a VVOF is defined by the topological index of the polarization singularity and the topological charge of the phase vortex. We present a simple method to measure the topological charge and index of VVOFs by using a space-variant half-wave plate (SV-HWP). The geometric phase grating of the SV-HWP diffracts a VVOF into ±1 orders with orthogonally left- and right-handed circular polarizations. By inserting a polarizer behind the SV-HWP, the two circular polarization states project into the linear polarization and then interfere with each other to form the interference pattern, which enables the direct measurement of the topological charge and index of VVOFs.

© 2018 Optical Society of America

Full Article  |  PDF Article
More Like This
High-order optical vortex generation in a few-mode fiber via cascaded acoustically driven vector mode conversion

Wending Zhang, Ligang Huang, Keyan Wei, Peng Li, Biqiang Jiang, Dong Mao, Feng Gao, Ting Mei, Guoquan Zhang, and Jianlin Zhao
Opt. Lett. 41(21) 5082-5085 (2016)

In situ measurement of the topological charge of a perfect vortex using the phase shift method

Haixiang Ma, Xinzhong Li, Yuping Tai, Hehe Li, Jingge Wang, Miaomiao Tang, Yishan Wang, Jie Tang, and Zhaogang Nie
Opt. Lett. 42(1) 135-138 (2017)

Diffractometry-based vortex beams fractional topological charge measurement

S. M. A. Hosseini-Saber, Ehsan A. Akhlaghi, and Ahad Saber
Opt. Lett. 45(13) 3478-3481 (2020)

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

Figures (6)

You do not have subscription access to this journal. Figure files 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

Equations (7)

You do not have subscription access to this journal. Equations 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