Abstract

Surface plasmons can be excited on a metal by an external plane-wave beam through the use of prism or grating couplers or by introducing roughness. This can enhance the electric field at the surface compared with that in the incident beam, and it has been suggested that this effect is an important aspect of surface-enhanced Raman scattering. A general upper limit for this field enhancement is derived on the basis of energy conservation. Numerical results are given for Ag, Au, and Cu. With a perfect coupler on a Ag surface, the maximum increase of the square of the electric field in the 2–3-eV range is ≅300. On randomly roughened surfaces, the estimated enhancements are of the order of unity.

© 1981 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Observation of long range surface plasmon decay length by optical second harmonic generation

Edward M. Schmidlin and Henry J. Simon
Appl. Opt. 28(16) 3323-3326 (1989)

Long-range surface plasmon polaritons

Pierre Berini
Adv. Opt. Photon. 1(3) 484-588 (2009)

Giant enhancement of elastic surface plasmon-polariton scattering

Valeriy A. Sterligov, Yakiv Men, and Petro M. Lytvyn
Opt. Express 18(1) 43-48 (2010)

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 (2)

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 (10)

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