Abstract

In this Letter, we create an optical nanoantenna array composed of parasitic plasmonic loops that can enhance radiation characteristics and direct the optical energy successfully. Three metallic loops inspired by the concept of the Yagi-Uda antenna are optimized around the region where they feature high scattering performance to control the radiation beam. The loop geometry, when compared to the dipole configuration, has the benefit of using the available aperture in an effective way to provide higher directivity. The angular emission of the nanoloop array antenna is highly directive, and a directivity of 8.2dB for upward radiation is established.

© 2010 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Plasmonic array nanoantennas on layered substrates: modeling and radiation characteristics

Shabnam Ghadarghadr, Zhengwei Hao, and Hossein Mosallaei
Opt. Express 17(21) 18556-18570 (2009)

Super directive Yagi–Uda nanoantennas with an ellipsoid reflector for optimal radiation emission

K. R. Mahmoud, Mohamed Hussein, Mohamed Farhat. O. Hameed, and S. S. A. Obayya
J. Opt. Soc. Am. B 34(10) 2041-2049 (2017)

All-dielectric optical nanoantennas

Alexander E. Krasnok, Andrey E. Miroshnichenko, Pavel A. Belov, and Yuri S. Kivshar
Opt. Express 20(18) 20599-20604 (2012)

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 (9)

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