Abstract

The polarization properties of a strongly focused, unpolarized, partially coherent beam with circular coherence are studied in this Letter. It is found that the degree of polarization (DoP) in the focal plane can be adjusted, not only by the initial coherence and the semi-aperture angle, but also through an annular pupil due to the unusual coherence of the source. Our results show that for an unpolarized, partially coherent incident beam, the field in the focal plane can go from almost an unpolarized state to almost a fully polarized state along a radial distance, although the initial coherence length is very short. Through adjusting the width of the annular pupil, the DoP on average can be significantly reduced or enhanced. Especially for the very narrow annulus, the approximation expression of the DoP is derived, from which the accurate positions of the peak values of the DoP can be easily calculated. Our findings provide an alternative way to tailor the DoP in three-dimensional optical fields.

© 2019 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Controlling the degree of polarization of partially coherent electromagnetic beams with lenses

Xinying Zhao, Taco D. Visser, and Govind P. Agrawal
Opt. Lett. 43(10) 2344-2347 (2018)

Fraunhofer diffraction and the state of polarization of partially coherent electromagnetic beams

Yangyundou Wang, Shenggang Yan, Xiaofei Li, Xianlong Liu, Yangjian Cai, Govind P. Agrawal, and Taco D. Visser
Opt. Lett. 44(13) 3330-3333 (2019)

Focusing of partially coherent Bessel-Gaussian beams through a high-numerical-aperture objective

Zhiming Zhang, Jixiong Pu, and Xiqing Wang
Opt. Lett. 33(1) 49-51 (2008)

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 (7)

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 (17)

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