Abstract

The magneto-optical Kerr effect, especially the Kerr slope, is of great significance to magneto-optical devices. Herein, we developed a method to tune the magneto-optical effect by the nanograting cross section. Both the simulation and experiment confirm that the resonance strength of the plasmon can be modulated by the nanograting cross section, resulting in the large Kerr slope and Kerr rotation. By designing the nanograting cross section, we obtained the Kerr slope of 0.397°/nm, which is 4 orders of magnitude higher than the reported results. And the Kerr rotation of the magnetic nanograting reaches up to 1.218°, which is 24 times higher than the flat Co film. Such a huge enhancement on the Kerr slope and the Kerr rotation may have profound applications in magneto-optical devices in the future.

© 2019 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Enhancing the magneto-optical Kerr effect through the use of a plasmonic antenna

T. H. J. Loughran, P. S. Keatley, E. Hendry, W. L. Barnes, and R. J. Hicken
Opt. Express 26(4) 4738-4750 (2018)

Field-dependent magneto-optical Kerr effect spectroscopy applied to the magnetic component diagnosis of a rubrene/Ni system

Wen Li, Michael Fronk, Manfred Albrecht, Mechthild Franke, Dietrich R. T. Zahn, and Georgeta Salvan
Opt. Express 22(15) 18454-18463 (2014)

Magnetoplasmonic nanograting geometry enables optical nonreciprocity sign control

L. Halagačka, M. Vanwolleghem, F. Vaurette, J. Ben Youssef, K. Postava, J. Pištora, and B. Dagens
Opt. Express 26(24) 31554-31566 (2018)

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 (4)

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 (1)

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