Abstract

We explore the phase distribution of the cross-spectral density (CSD) function with an off-axis reference point of a focused higher-order partially coherent vortex (PCV) beam in the focal plane. Our results reveal that the numbers of ring dislocations and screw dislocations in the CSD function equal to the magnitudes of the azimuthal mode index and radial mode index of the incident beam, respectively. In addition, the sign of the azimuthal mode index determines the direction of the phase change of the screw dislocation. This phenomenon can be used to measure the magnitude and sign of the mode indices of a higher-order PCV beam simultaneously. Our results will be useful for quantum information processing, optical storage, and communications.

© 2019 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Partially coherent fractional vortex beam

Jun Zeng, Xianlong Liu, Fei Wang, Chengliang Zhao, and Yangjian Cai
Opt. Express 26(21) 26830-26844 (2018)

Digital generation of partially coherent vortex beams

Benjamin Perez-Garcia, Adad Yepiz, Raul I. Hernandez-Aranda, Andrew Forbes, and Grover A. Swartzlander
Opt. Lett. 41(15) 3471-3474 (2016)

Partially coherent radially polarized fractional vortex beam

Jun Zeng, Chunhao Liang, Haiyun Wang, Fei Wang, Chengliang Zhao, Greg Gbur, and Yangjian Cai
Opt. Express 28(8) 11493-11513 (2020)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

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

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 OSA member, or as an authorized user of your institution.

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

Figures (4)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA 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 OSA member, or as an authorized user of your institution.

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

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

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