Surface plasmons

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Dispersion relation for surface plasmon polaritons • For any EM wave: 2 2 ⎛ω⎞ 2 2 = εi = x + zi x ≡ xm = xd k ⎜ ⎟ k k , where k k k ⎝ c ⎠ SP Dispersion Relation k x ω = c ε mεd ε + ε m d
<strong>Surface</strong> plasmon dispersion relation: relation ω p 1+ ε ω ω p d ω = ω + ck 2 2 2 2 p x ck x z ε d Dielectric: ε d x Metal: εm = ε ' m + ε " m k x ω ⎛ ε ⎞ mε d = ⎜ ⎟ c ⎝ ε m + ε d ⎠ 1/ 2 Radiative modes (ε'm > 0) Quasi-bound modes (−εd < ε'm < 0) Bound modes (ε' m < −ε d ) k zi Re k x ⎛ 2 εi 1/2 ⎞ ⎝εm + εd ⎠ ω = ⎜ ⎟ c real k x real k z imaginary k x real k z real k x imaginary k z
Page 1 and 2: Basics : Dispersion relation of su
Page 3 and 4: What is a plasmon? Note: SP is a TM
Page 5 and 6: Local field intensity depends on wa
Page 7 and 8: Ideal case : metal as a free-electr
Page 9 and 10: Dispersion relation for EM waves in
Page 11: Dispersion relation for surface pla
Page 15 and 16: Excitation of surface plasmons
Page 17 and 18: When the film thickness becomes fin
Page 19: Several 1 cm long, 15 nm thin and 8
Page 23 and 24: P. Berini, PhotonicWest 2005.
Page 25 and 26: Tunable Wavelength filter by direct
Page 27 and 28: Variable optical attenuator based o
Page 30 and 31: Propose metal nanowires. Beam radiu
Page 32 and 33: 2007/5/1 ~ an optical range resonat
Page 34: Slow Propagation, Anomalous Absorpt
Page 37: Summary : Plasmonic Photonics Plasm

Surface plasmons

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