Abstract

We study the decrease in group velocity of broadband surface plasmon polariton propagation on a conical tip, using femtosecond time-domain interferometry. The group delay of (9±3)fs measured corresponds to a group velocity at the apex of less than 0.2c. The result agrees in general with the prediction from adiabatic plasmonic nanofocusing theory, yet is sensitive with respect to the exact taper geometry near the apex. This, together with the sub 25fs2 second-order dispersion observed, provides the fundamental basis for the use of plasmons for broadband slow-light applications.

© 2013 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Plasmonic corrugated cylinder–cone terahertz probe

Haizi Yao and Shuncong Zhong
J. Opt. Soc. Am. A 31(8) 1856-1860 (2014)

Superfocusing of electric or magnetic fields using conical metal tips: effect of mode symmetry on the plasmon excitation method

Jae Sung Lee, Sanghoon Han, Javid Shirdel, Sukmo Koo, Diyar Sadiq, Christoph Lienau, and Namkyoo Park
Opt. Express 19(13) 12342-12347 (2011)

Wave front adaptation using a deformable mirror for adiabatic nanofocusing along an ultrasharp gold taper

Slawa Schmidt, Pascal Engelke, Björn Piglosiewicz, Martin Esmann, Simon F. Becker, Kyungwan Yoo, Namkyoo Park, Christoph Lienau, and Petra Groß
Opt. Express 21(22) 26564-26577 (2013)

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 (3)

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

Tables (1)

You do not have subscription access to this journal. Article tables 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