Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Anomalous surface plasmon dispersion in aluminum
Search
Philip Chimento
June 15, 2012
Science
1
100
Anomalous surface plasmon dispersion in aluminum
Talk I gave at Casimir Spring School 2012
Philip Chimento
June 15, 2012
Tweet
Share
More Decks by Philip Chimento
See All by Philip Chimento
Taking Out The Garbage (And How You Can Help)
ptomato
1
250
Endless Hack
ptomato
0
16k
JavaScript in GNOME 2018
ptomato
0
17k
Modern Javascript in GNOME
ptomato
1
24k
New GJS Language Features in GNOME 3.24
ptomato
0
49k
Open and reproducible scientific programming
ptomato
1
320
A Circular Nanoslit as a Spin-to-Orbital Angular Momentum Converter
ptomato
1
170
Other Decks in Science
See All in Science
MCMCのR-hatは分散分析である
moricup
0
370
SciPyDataJapan 2025
schwalbe10
0
240
点群ライブラリPDALをGoogleColabにて実行する方法の紹介
kentaitakura
1
300
baseballrによるMLBデータの抽出と階層ベイズモデルによる打率の推定 / TokyoR118
dropout009
1
470
データベース02: データベースの概念
trycycle
PRO
2
760
データベース09: 実体関連モデル上の一貫性制約
trycycle
PRO
0
700
統計学入門講座 第3回スライド
techmathproject
0
100
Symfony Console Facelift
chalasr
2
460
データベース03: 関係データモデル
trycycle
PRO
1
120
地質研究者が苦労しながら運用する情報公開システムの実例
naito2000
0
210
オンプレミス環境にKubernetesを構築する
koukimiura
0
270
Gemini Prompt Engineering: Practical Techniques for Tangible AI Outcomes
mfonobong
2
130
Featured
See All Featured
Rebuilding a faster, lazier Slack
samanthasiow
82
9.1k
Large-scale JavaScript Application Architecture
addyosmani
512
110k
Testing 201, or: Great Expectations
jmmastey
42
7.6k
GitHub's CSS Performance
jonrohan
1031
460k
How STYLIGHT went responsive
nonsquared
100
5.6k
Templates, Plugins, & Blocks: Oh My! Creating the theme that thinks of everything
marktimemedia
31
2.4k
Principles of Awesome APIs and How to Build Them.
keavy
126
17k
Documentation Writing (for coders)
carmenintech
72
4.9k
Building Better People: How to give real-time feedback that sticks.
wjessup
367
19k
Making Projects Easy
brettharned
116
6.3k
Stop Working from a Prison Cell
hatefulcrawdad
270
21k
Adopting Sorbet at Scale
ufuk
77
9.4k
Transcript
Anomalous surface plasmon dispersion in aluminum Eric Eliel Gert ‘t
Hooft Philip Chimento >ĞŝĚĞŶhŶŝǀĞƌƐŝƚLJͻYƵĂŶƚƵŵKƉƟĐƐ @therealptomato { }
{ Surface plasmons }
Quick explanation of them Surface plasmons Using English literature
in English literature Image: public domain Surface plasmons Dr. Edwin
Abbott Abbott, author of...
“Flatland”
“Flatland” A surface plasmon polariton is what a light wave
would be in Flatland
“Flatland” A surface plasmon polariton is what a light wave
would be in Flatland
Exist on the interface between a metal and a dielectric
Surface plasmons
Can be excited using light, but not directly Surface plasmons
Can be excited using light, but not directly Surface plasmons
A surface plasmon on a metal-air interface has more momentum
than a photon with the same energy in air Surface plasmons
A photon in a denser medium can match the momentum
of a surface plasmon on a metal-air interface Surface plasmons
Attenuated total reflection — “Kretschmann configuration” ATR Coupling
Evanescent waves from the total internal reflection cross the metal
and couple to plasmons on the other side ATR Coupling
{ That was easy }
It’s a question of “the least bad” Metals for plasmonics
Aluminum is one of the “least bad” Metals for plasmonics
Rakic et al., Appl. Opt. 37, p. 5271 (1998) Aluminum
has an interband transition that absorbs at 800 nm Aluminum
E ective mode index of plasmons on an aluminum surface
Aluminum plasmons īĞĐƟǀĞ^WŝŶĚĞdž
have a region of anomalous dispersion Aluminum plasmons īĞĐƟǀĞ^WŝŶĚĞdž Anomalous
dispersion
Experiment Exciting plasmons on aluminum by ATR coupling ϱŶŵ^ŝ 3
N 4 ƉƌŽƚĞĐƟŽŶůĂLJĞƌ ϳ͕ϵ͕ϭϮ͕ϭϯŶŵů <ϳŐůĂƐƐ
Measure reflection as a function of angle Experiment
^ŽƵrĐe DeteĐtŽr ɽ ɽ
We measure hundreds of one-wavelength curves like these... Experiment
...to get a dispersion curve like this Experiment īĞĐƟǀĞ^WŝŶĚĞdž
The results were less than inspiring for a 9 nm
layer Plasmon dispersion
For a 12 nm layer, the dispersion was anomalous but
less than expected Plasmon dispersion īĞĐƟǀĞ^WŝŶĚĞdž
Novotny et al., J. Nanophotonics 5 (2011) Thin-layer aluminum doesn’t
have the same optical properties as bulk aluminum What’s going on? ďƵůŬ
Thicker aluminum layer behaves more like bulk aluminum, but diminishes
the ATR e ect How to fix it?
Thicker aluminum layer behaves more like bulk aluminum, but diminishes
the ATR e ect How to fix it? The evanescent waves evanesce before they reach the top
You have to be crazy to do it, but: the
Otto configuration How to fix it?
Crazy? Relative size of a dust particle, 20 µm Gap
size, 1 µm
Luckily, that problem is solvable How to fix it? ŚŝŐŚͲŝŶĚĞdžĚŝĞůĞĐƚƌŝĐ
ůŽǁͲŝŶĚĞdž ĚŝĞůĞĐƚƌŝĐ
{ Thanks } Fruitful discussions Michiel de Dood Wolfgang Lö
er Kind assistance Daan Boltje Klara Uhlirova