Abstract

We derive the general expression for the orbital angular momentum (OAM) flux of an astigmatic partially coherent beam carrying twist phase [i.e., twisted anisotropic Gaussian–Schell model (TAGSM) beam] propagating through an astigmatic ABCD optical system with loss or gain. The evolution properties of the OAM flux of a TAGSM beam in a Gaussian cavity or propagating through a cylindrical thin lens are illustrated numerically with the help of the derived formula. It is found that we can modulate the OAM of a partially coherent beam by varying the parameters of the cavity or the orientation angle of the cylindrical thin lens, which will be useful in some applications, such as free-space optical communications and particle trapping.

© 2014 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Orbital angular moment of an electromagnetic Gaussian Schell-model beam with a twist phase

Lin Liu, Yusheng Huang, Yahong Chen, Lina Guo, and Yangjian Cai
Opt. Express 23(23) 30283-30296 (2015)

Twist phase-induced changes of the statistical properties of a stochastic electromagnetic beam propagating in a uniaxial crystal

Lin Liu, Yahong Chen, Lina Guo, and Yangjian Cai
Opt. Express 23(9) 12454-12467 (2015)

Second-order statistics of a twisted Gaussian Schell-model beam in turbulent atmosphere

Fei Wang and Yangjian Cai
Opt. Express 18(24) 24661-24672 (2010)

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 (3)

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 (20)

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