Abstract

A potential control over the position of maxima of scattering and absorption cross sections can be exploited to better tailor nanoparticles for specific light–matter interaction applications. Here we explain in detail the mechanism of an appreciable blue shift of the absorption cross-section peak relative to a metal spherical particle localized surface plasmon resonance (LSPR) defined as the maximum of the extinction (and scattering) cross section. Such a branching of cross sections’ maxima requires a certain threshold value of size parameter ($x \approx 0.7$ for dipole channel) and is a prerequisite for obtaining high fluorescence enhancements, because the spectral region of high radiative rate enhancement becomes separated from the spectral region of high non-radiative rate enhancement. A consequence is that the maximum of the absorption cross section cannot be used as the definition of the LSPR position for $x \gtrsim 0.7$.

© 2020 Optical Society of America

Full Article  |  PDF Article
More Like This
Maximizing absorption and scattering by spherical nanoparticles

Torgom Yezekyan, Khachatur V. Nerkararyan, and Sergey I. Bozhevolnyi
Opt. Lett. 45(6) 1531-1534 (2020)

Landau broadening of plasmonic resonances in the Mie theory

Renat Sh. Ikhsanov, Igor E. Protsenko, Igor V. Smetanin, and Alexander V. Uskov
Opt. Lett. 45(9) 2644-2647 (2020)

Modulation instability in waveguides doped with anisotropic nanoparticles

A. D. Sánchez, N. Linale, J. Bonetti, and D. F. Grosz
Opt. Lett. 45(11) 3119-3122 (2020)

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 (4)

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 (12)

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