Abstract

We propose a novel method for all-optical modulation. Our method is based on tuning the dimensions of nanoparticles by manipulating thermal energy. The excitation characteristics of coated nanoparticles change following minor variations in their dimensions. This is because incident radiation will encounter particles with an altered extinction cross section. We considered nanoparticles comprising gold cores with silica coating. We found distinct nanoparticle dimensions that exhibit steep changes in their optical extinction cross section under thermal expansion. Based on these dimensions we calculated the optical contrast. The results showed that optical contrast reaches 1.86 dB for radii of 900 nm.

© 2012 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Efficient photo-thermal activation of gold nanoparticle-doped polymer plasmonic switches

J.-C. Weeber, K. Hassan, L. Saviot, A. Dereux, C. Boissière, O. Durupthy, C. Chaneac, E. Burov, and A. Pastouret
Opt. Express 20(25) 27636-27649 (2012)

Local photochemical plasmon mode tuning in metal nanoparticle arrays

Susan Derenko, René Kullock, Zhi Wu, Andrew Sarangan, Christiane Schuster, Lukas M. Eng, and Thomas Härtling
Opt. Mater. Express 3(6) 794-805 (2013)

Plasmon assisted thermal modulation in nanoparticles

A. L. Lereu, R. H. Farahi, L. Tetard, S. Enoch, T. Thundat, and A. Passian
Opt. Express 21(10) 12145-12158 (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 (5)

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

Equations (19)

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