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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 7 — Apr. 1, 2014
  • pp: 1968–1971

Orbital angular moment of a partially coherent beam propagating through an astigmatic ABCD optical system with loss or gain

Yangjian Cai and Shijun Zhu  »View Author Affiliations


Optics Letters, Vol. 39, Issue 7, pp. 1968-1971 (2014)
http://dx.doi.org/10.1364/OL.39.001968


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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

OCIS Codes
(030.1640) Coherence and statistical optics : Coherence
(030.1670) Coherence and statistical optics : Coherent optical effects
(070.2590) Fourier optics and signal processing : ABCD transforms

ToC Category:
Coherence and Statistical Optics

History
Original Manuscript: December 9, 2013
Revised Manuscript: February 10, 2014
Manuscript Accepted: February 11, 2014
Published: March 25, 2014

Virtual Issues
Vol. 9, Iss. 6 Virtual Journal for Biomedical Optics

Citation
Yangjian Cai and Shijun Zhu, "Orbital angular moment of a partially coherent beam propagating through an astigmatic ABCD optical system with loss or gain," Opt. Lett. 39, 1968-1971 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-7-1968

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