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Surface Plasmon Polaritons (SPPs) - Introduction and basic properties

Surface Plasmon Polaritons (SPPs) - Introduction and basic properties

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ω<br />

SP<br />

= ω<br />

p<br />

ω p<br />

1<br />

1+<br />

ε<br />

d<br />

ω<br />

Volume vs. surface plasmon polariton<br />

2 2<br />

ω = ω p + c<br />

plasmon<br />

polariton<br />

2<br />

k<br />

2<br />

x<br />

ω = ck<br />

photon<br />

in air<br />

with damping<br />

x<br />

ε ′ → −<br />

ε d<br />

surface plasmon polariton<br />

ω =<br />

ε + ε<br />

ε<br />

m d ckx<br />

mε<br />

d<br />

k x<br />

volume plasmon<br />

surface plasmons<br />

non-propagating<br />

collective oscillations<br />

of electron plasma<br />

near the surface

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