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

Measuring the complex orbital angular momentum spectrum of light with a mode-matching method

Abstract

The relative phase shift among different components in the superposition of orbital angular momentum (OAM) states contains significant information. However, with existing methods of measuring the OAM spectrum, the phase term of the spectrum coefficient is hard to obtain. In this Letter, a mode-matching method is proposed to identify the complex OAM spectrum with a Mach–Zehnder interferometer and a charge-coupled device camera. It has the potential to extend the applications of OAM in scenarios sensitive to the phase factor, for instance, in imaging and quantum manipulation. The method is experimentally demonstrated with the superposition of two or three OAM states, while the maximum deviation of the energy ratio and the relative phase shift is 8.4% and 5.5% of 2π, respectively.

© 2017 Optical Society of America

Full Article  |  PDF Article
More Like This
Using a complex optical orbital-angular-momentum spectrum to measure object parameters

Guodong Xie, Haoqian Song, Zhe Zhao, Giovanni Milione, Yongxiong Ren, Cong Liu, Runzhou Zhang, Changjing Bao, Long Li, Zhe Wang, Kai Pang, Dmitry Starodubov, Brittany Lynn, Moshe Tur, and Alan E. Willner
Opt. Lett. 42(21) 4482-4485 (2017)

Measuring the complex orbital angular momentum spectrum and spatial mode decomposition of structured light beams

Alessio D’Errico, Raffaele D’Amelio, Bruno Piccirillo, Filippo Cardano, and Lorenzo Marrucci
Optica 4(11) 1350-1357 (2017)

Measuring the orbital angular momentum spectrum with a single point detector

Shikang Li, Peng Zhao, Xue Feng, Kaiyu Cui, Fang Liu, Wei Zhang, and Yidong Huang
Opt. Lett. 43(19) 4607-4610 (2018)

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 (5)

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 (5)

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