Download No Slide Title

Survey
yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Document related concepts
no text concepts found
Transcript
What’s Next?
Plasmonic Imaging:
"A New Lens into the Nano-World”
The Mantra: Plasmon wave imaging:
Optical frequencies, but with X-ray wavelengths!
Josh Conway
Thomas Szkopek
Eli Yablonovitch
Xiang Zhang
e2>0 E
---
e1<0
kz
air
+++
+++
---
metal
Surface plasmons
image
plane
light
plasmon wave
double-sided
surface plasmons
---
kx
Plasmon Wavelength in nm
h
3.0
0.5236
1.0472 2.0944
2.61803.4907
200
50
30
100
6.9813
15
10.4720
10
40
2.5
2.5
Plasmon Energy in eV
5.2360
20
t=20nm
2.8eV
t=5nm
t=2nm
t=1nm
2.0
2.0
t=thickness of metal film
1.5
1.5
1.0
1.0
Optical frequencies,
but with X-ray wavelengths!
0.5
0.5
0.0
0.0
0.1
0.1
0.2
0.2
0.3
0.3
0.4
0.4
0.5
0.5
Plasmon Wave-Vector (2/wavelength in nm)
0.6
0.6
k
Thin-film plasmon imaging optics
double convex lens
(high index)
double concave lens
(low index)
sapphire
plasmon wave
- + - +
+
-+ plasmon wave
grating
coupler
light h =2.5eV
silicon
photoresist
Final
Objective
Lens
n9> n8>       >n1>n0
n0
n1
n2
n3
n4
n5
n6
n7
n8
n9
Rayleigh Limit is /n9
sapphire
plasmon wave
- + - +
+
-+ plasmon wave
grating
coupler
light h =2.5eV
silicon
photoresist
Plasmon imaging in a silver film
in-coupling grating
dimple lens
out-coupling edge
far-field from
conventional lens
image
plane
light
plasmon wave
metal film supports plasmon waves
photoresist
curved grating coupler
plasmon lens
image
plane
image
conventional
refractive
lens
Plasmon wave imaging:
Optical frequencies, but with X-ray wavelengths!
object
Plasmon wave imaging:
object Optical frequencies, but with X-ray wavelengths!
grating coupler
slider
conventional
refractive lens
light
grating coupler
plasmon wave
mirror
photoresist
silicon
image
Plasmon Wavelength in nm
h
3.0
0.5236
1.0472 2.0944
2.61803.4907
200
50
30
100
6.9813
15
10.4720
10
40
2.5
2.5
Plasmon Energy in eV
5.2360
20
t=20nm
2.8eV
t=5nm
t=2nm
t=1nm
2.0
2.0
t=thickness of metal film
1.5
1.5
1.0
1.0
Optical frequencies,
but with X-ray wavelengths!
0.5
0.5
0.0
0.0
0.1
0.1
0.2
0.2
0.3
0.3
0.4
0.4
0.5
0.5
Plasmon Wave-Vector (2/wavelength in nm)
0.6
0.6
k
Silver Film on Sapphire
Plasmon Wavelength in nm
p
1.5 eV
400
400
300
300
2.0 eV
200
200
2.5 eV
80
60
40
100
100
20
0
0
00
20
20
40
40
0
1
60
60
Silver Film Thickness in nm
2
80
80
3
4
5
100
t
Imaginary versus Real part of wave vector:
kIm
Imaginary Wave-number in rad/nm
0.05
200 50
Plasmon wavelength in nm
20 15
10
5
p
1.5 eV
0.04
2.5 eV
2.0 eV
0.03
0.02
Q ~ 20
0.01
0
0. 5
1.0
Real Wave-number rad/nm
kReal
dc Magnetic Dipole Disk Drive
ac Electric Dipole Disk Drive
image from
ray
modulator ar
1mm
30nm
SIDE VIEW
slide
r sus
pens
ion
photoresist
silicon
sapphire slider
plasmon lens
Plasmon wave imaging:
object Optical frequencies, but with X-ray wavelengths!
grating coupler
slider
conventional
refractive lens
light
grating coupler
plasmon wave
mirror
photoresist
silicon
image
L
C
F  ma
dv
dt
d
q 2 E  m qv
dt
d
nq 2 E  m nqv
dt
qE  m
nq 2 E d
 J 
m
dt
But E  V/Length, and J  I/Area
 J  nqv
nq 2 V
d  I 
 

m Length dt  Area 
Length dI
 2p V 
Area dt
1 Length dI
V 2
 p Area dt
where L 
1 Length
 2p Area
is called the kinetic inductance L
notice that capacitanc e C ~

1
 p
LC
Area
Length
Thin capacitors can sustain very large electric fields
108Volts/cm
1Volt/Angstrom
λ
I(ω)
++++
+++
++
-------
anti-bodies
anti-gens
DNA fragments
RNA
toxins
1 photon in a 1nm1nm1nm capacitor
produces an electric field= 108 Volts/cm
electric field= 1Volt/Angstrom
This is enough for a giant optical nonlinearity!
capacitive biosensor
grating
out-coupler
grating
k
in-coupler
wire
plasmonic
nonlinear
λ medium
three terminal
optical device
anti-bodies
anti-gens
DNA fragments
RNA
toxins
Plasmon Wavelength in nm
h
Plasmon Energy in eV
4
4
10
20
50 100 100 50
20
10
Air
thin
Al2O3
3
3
Al2O3
2
2
11
0
0
-1 -0.5
-0 -0.4
-0 -0.3
-0 -0.2
-0 -0.1
-0
-0.6
00
0
0
0
0
0.1
0.2
0.3
0.4
1
1
0.5
0.6
Plasmon Wave-Vector (2/wavelength in nm)
k
Plasmon Wavelength in nm
h
4
4
10
20
50 100 100 50
20
10
d=1nm
3
3
d=10nm
d=5nm
d=20nm
2
2
1
1
0
0
ib
ic
r
ctr
d
air
Al2O3
di
-e
le
Plasmon Energy in eV
d=2nm
silver
-1 -0.5
-0 -0.4
-0 -0.3
-0 -0.2
-0 -0.1
-0
-0.6
00
r
e
is lv
0
0
0
0
0.1
0.2
0.3
0.4
1
1
0.5
0.6
Plasmon Wave-Vector (2/wavelength in nm)
k