Metamaterials with incorporated semiconnductor quantum structurure for surface plasmon polariton

1. Semiconductor QuantumSemiconductor Quantum
StructureStructure
incorporated Metamaterials forincorporated Metamaterials for
surface Plasmon Polaritonsurface Plasmon Polariton
D.R.KARTIKAYAN

2. TopicsTopics
Metamaterials and their Features
Semiconductor Quantum Structures
Surface Plasmon Polariton
Future Prospects

3. LHMLHM
METAMATERIALS
They are engineered composite materials engineered
to produce an optimized combination not found in nature
Negative Permittivity Negative Permeability
Negative Index of
Refraction
Metamaterials & their propertiesMetamaterials & their properties

4. Quantum Dots Quantum Wires Quantum Wells
2-d confinement3-d confinement 1-d confinement
Semiconductor Quantum StructuresSemiconductor Quantum Structures

5. (a) (b)
A Method Of implementing the LHM
a) Layered Quantum Wells
b) Vertically Aligned Quantum Dots
Why SQS in Metamaterials ?Why SQS in Metamaterials ?

6. Relation for intersubband induced permeability
Voltage controllability of material regime.
Magenta ellipse highlighted the LHM
region; green ellipse highlighted the RHM
region.
Subbands formed
Intersubband transitions occur
Anisotropy obtained in the core
Later traslated to Negative
Refractive Index
Sufficiently high ground
state electron density
By strong electrical pump
Or Doping
BUT
Working PrincipleWorking Principle
QDs more popular
THAN other SQS
3d- confinement reducing
the Dephasing rates
Strong Anisotropy from vertically
Coupled InN/AlN QDs
Coupled QDs when used
Controllability easily achieved
Vertically coupled growing QDs

7. SURFACE PLASMON
POLARITON COUPLING OF
SURFACE PLASMONS
WITH LIGHTPLASMONS
CONFINED
TO SURFACES
OR AT INTERFACES
QUANTIZATIONS OF
PLASMA OSCILLATIONS
DIELECTRIC BASED OPTICS SURFACE PLASMON POLARITON
NANO SIZED PHOTONICS
SPP is basically waveguiding on a single dielectric/metal interface, and
the condition for guiding is the different sign of electric permeability
of the interfacing Media
Surface Plasmon PolaritonSurface Plasmon Polariton

8. Inherent losses caused by Metal free-carrier Absorption,
similar to losses observed in LHM Metamaterials
RESULTING IN WAVE PROPAGATION DISTANCE
ONLY IN THE MICROMETER SCALE
DEVELOPMENTS POSSIBLE IN PHOTONICS IF LOSSES
ARE TAKEN CARE OF
NANO SCALED
OPTICAL
DEVICES
HIGH LEVEL
INTEGRATION
DYNAMIC PLASMONIC
ELEMENTS
SPP Limitations and ProspectsSPP Limitations and Prospects

9. Using the SQS
as in the case of LHM
Search of Suitable Materials
for Quantum Cascade
Making the resonance wavelenghts for
Intersubband Transition lie in the visible range
than in the Infrared range
Lead to its use in optical range
SPP Applications
How SPP Limitations can be overcomeHow SPP Limitations can be overcome
Use of Nitride
Group of Materials
Display optical range of
Frequencies by intersubband
transitions
Room Temperature Operation of
QCL
Availability of low background
dielectric constant
Possibility of High Speed Control

10. Future ProspectsFuture Prospects
Fabrication Of the
much hyped
Cloaking Device

11. ConclusionConclusion
We discussed of Metamaterials or LHM and how
SQS when incorporated in them significantly lowers
the losses
Surface Plasmon Polariton was talked upon and its
limitations discussed and how the losses can be
overcome by using almost the same concept as that in
LHM.
The Nitride group of Materials were briefly discussed
and how they can serve the purpose in case of making
SPP work for optical range

12. ReferencesReferences
J. B. Pendry, "Negative refraction makes a
perfect lens,"
Pavel Ginzburg and Meir Orenstein,
“Metal-less Metamaterial for Surface
Plasmon Polariton guiding and
amplification.”
Pavel Ginzburg and Meir Orenstein,
“Metal-less Optical Left Handed Material
by Low dimensional Quantum Structure
Anisotropy.”

13. -D.R.KARTIKAYAN