Abstract

We propose an orientation-dependent polarization manipulation by Cherenkov radiation (CR) in a silicon-on-insulator (SOI) waveguide with a metasurface. By putting an electron bunch passing near the SOI waveguide, CR excites the fundamental TE-like mode with ultra-high mode purity. The spin state of the decoupled light is determined by the direction of the electron motion, and the maximum magnitude of the normalized Stokes polarization parameter $ {S_3} $ approaches $ \pm 1 $, corresponding to the right and left circularly polarized light. This Letter provides a new, to the best of our knowledge, way to achieve CR with spin angular momentum in an SOI waveguide and offers a platform to study the interaction between an electron and light with nanostructures on-chip.

© 2020 Optical Society of America

Full Article  |  PDF Article
More Like This
Intrinsically reducing divergence angle of Cherenkov radiation from dielectric capillary

Shimin Jiang, Weiwei Li, Zhigang He, Qika Jia, and Lin Wang
Opt. Lett. 45(19) 5416-5419 (2020)

Polarization-controlled bifunctional metasurface for structural color printing and beam deflection

Yun Huang, Jia Zhu, Shengxiao Jin, Meizhang Wu, Xiaoyu Chen, and Wengang Wu
Opt. Lett. 45(7) 1707-1710 (2020)

All-optical logic gates using dielectric-loaded waveguides with quasi-rhombus metasurfaces

Chaonan Yao, Amer Kotb, Bin Wang, Subhash C. Singh, and Chunlei Guo
Opt. Lett. 45(13) 3769-3772 (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 (5)

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 (3)

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