Abstract

We investigate optical properties of a gold structure comprising a two-dimensional array of gold nanoblocks placed on top of a thin gold film. We observe enhanced transmission through asymmetric nanostructured gold films, which can be attributed to the surface plasmon (SP) mode at the air-gold interface leaking to the substrate when the substrate index is larger than the superstrate index. When the substrate and superstrate are the same dielectric, the SPs at both superstrate-gold and gold-substrate interfaces strongly interact with each other and even and odd SPs are then excited. In addition, we investigate effects of oblique incidence and electronic interband transition on SP resonances. Our results provide a guideline for engineering novel devices with enhanced transmission based on nanostructures.

© 2012 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Plasmonic Bragg reflectors for enhanced extraordinary optical transmission through nano-hole arrays in a gold film

Pramodha Marthandam and Reuven Gordon
Opt. Express 15(20) 12995-13002 (2007)

Resonant optical transmission through thin metallic films with and without holes

Nicolas Bonod, Stefan Enoch, Lifeng Li, Evgeny Popov, and Michel Nevière
Opt. Express 11(5) 482-490 (2003)

Grating-assisted enhanced optical transmission through a seamless gold film

Wei Wang, Ding Zhao, Yiting Chen, Hanmo Gong, Xingxing Chen, Shuowei Dai, Yuanqing Yang, Qiang Li, and Min Qiu
Opt. Express 22(5) 5416-5421 (2014)

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 (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