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Plasmonic Bragg Resonators Miriam Deutsch, University of Oregon, DMR-0239273

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Dielectric. Metal. …. Metal. Plasmonic Bragg Resonators Miriam Deutsch, University of Oregon, DMR-0239273. Objectives: To study the optical response of nano-structured metallodielectric systems such as spherical plasmonic Bragg resonators. Results:

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Presentation Transcript
slide1
Dielectric

Metal

Metal

Plasmonic Bragg ResonatorsMiriam Deutsch, University of Oregon, DMR-0239273

Objectives:

To study the optical response of nano-structured metallodielectric systems such as spherical plasmonic Bragg resonators.

Results:

We find that resonance conditions exist such that the optical response of the system may be continuously tuned from enhanced absorption (below left) to induced transparency (below right.)

1 - 5μm

Increasing resonator size, changing core/shell ratio

diameter ~ 1μm

diameter

~ 4μm

-Log (Transmittance)

Absorption cross-section (μm2)

Wavelength (μm)

Wavelength (μm)

K. Hasegawa, C. A. Rohde, M. Deutsch, submitted (2005)

slide2
Plasmonic Bragg ResonatorsMiriam Deutsch, University of Oregon, DMR-0239273

Outreach:

The PI has been regularly training students in the REU program. In Summer 2005 Rose Ruther, a Chemistry/Physics REU student from New College of Florida has actively participated in our group research.

We have written a comprehensive computer program for calculating light scattering from metallodielectric spherical Bragg resonators utilizing a plane-wave multipole expansion. The code will soon be distributed on our group website as a free download.

Education:

Five graduate students (Scott Ernst, Sarah Emmons, Charles Rohde, Aiqing Chen and Keisuke Hasegawa) are currently working in the group. Sarah Emmons is a Chemistry graduate student. She is the recipient of the NSF GK-12 fellowship. Charles Rhode is a Physics graduate student. He was an NSF IGERT fellow during the 2002-2003 academic year. Scott Ernst, Aiqing Chen and Keisuke Hasegawa are Physics graduate students.

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