ScholarWorks at UMass Boston

Title

Practical limits of absorption enhancement near metal nanoparticles

Authors

Jacob B. Khurgin, Johns Hopkins UniversityFollow
Greg Sun, University of Massachusetts BostonFollow
R. A. Soref, Air Force Research Laboratory, Hanscom Air Force BaseFollow

Document Type

Article

Publication Date

2-17-2009

Abstract

We consider the enhanced absorption of optical radiation by molecules placed in the vicinity of spherical metal nanoparticles in the realistic situation that includes perturbation of the optical field by the absorbing molecules. We show that there is an optimal nanosphere radius that gives the strongest enhancement for each combination of the number of absorbing molecules, their absorption strength, and their distance from the nanosphere surface and that the enhancement is strong only for relatively weak and diluted absorbers.

Comments

The following article appeared in Applied Physics Letters, vol. 94, issue 7 (2009) and may be found at http://dx.doi.org/10.1063/1.3081631.

Copyright 2009 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

Recommended Citation

Khurgin, Jacob B.; Sun, Greg; and Soref, R. A., "Practical limits of absorption enhancement near metal nanoparticles" (2009). Physics Faculty Publications. 16.
https://scholarworks.umb.edu/physics_faculty_pubs/16

Publisher

American Institute of Physics

Rights

Copyright 2009 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.