Abstract

We proposed a type of tightly autofocusing beams (TABs) to create and enhance longitudinally polarized fields with subdiffraction beam sizes. It reveals that the TABs can automatically focus and behave with similar focusing properties to those with a high numerical aperture lens; a radially polarized beam generates a strong longitudinal field, while the azimuthally polarized one cannot. By reducing the order of the TAB, the maximum conversion efficiency of light to longitudinal field is as high as 98.32% in theory. As such, we demonstrate that the spin-to-orbital angular momentum conversion is also enhanced by circularly polarized TABs.

© 2020 Optical Society of America

Full Article  |  PDF Article
More Like This
Abrupt polarization transition of vector autofocusing Airy beams

Sheng Liu, Meirong Wang, Peng Li, Peng Zhang, and Jianlin Zhao
Opt. Lett. 38(14) 2416-2418 (2013)

Tightly focused light field with controllable pure transverse polarization state at the focus

Lei Han, Shuxia Qi, Sheng Liu, Huachao Cheng, Peng Li, and Jianlin Zhao
Opt. Lett. 45(21) 6034-6037 (2020)

Laser microprocessing of metal surfaces using a tightly focused radially polarized beam

Yuichi Kozawa, Masaki Sato, Yuuki Uesugi, and Shunichi Sato
Opt. Lett. 45(22) 6234-6237 (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 Optica member, or as an authorized user of your institution.

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

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

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

Equations (1)

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

Metrics

You do not have subscription access to this journal. Article level metrics 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