The members of the group
Project Coordinator
Principal Investigators
Graduate Students
-
Ihab El-Kady (Dept.
of Physics and Astronomy)
-
Stavrula Foteinopoulou (Dept. of Physics and
Astronomy)
-
Kevin Sutherland (Materials Science and Engineering)
-
Henry Kang (Materials Science and Engineering)
Former Group Members
-
Dr. Q.M.Li (Sclumberger-Anadrill, Houston,
Texas)
-
Dr. Ganesh
Subramania(MIT)
-
Dr. Jon Kavanaugh(Dept.
of Electrical and Computer Engineering)
-
Dr. Che-Ting Chan (Hong Kong University of
Science and Technology)
-
Dr. Scott McCalmont (Electronic Technology
Corp., Ames, Iowa)
-
Dr. E. Ozbay (Bilkent University, Turkey)
-
Photonic Band Gap structures (PBG
structures)
-
Photonic Band Gap structures are
periodic dielectric structures that forbid
-
propagation of Electromagnetic waves
in a certain frequency range.
Such photonic " crystals " not only
open up variety of possible applications (in lasers, antennas, millimeter
wave devices, efficient solar cells photocatalytic processes) , but also
give rise to interesting new physics (cavity electrodynamics, localization,
disorder, photon-number-state squeezing).
Here at Iowa
State University , we are currently involved
in several projects both of theoretical and experimental nature. The funding
for these projects are provided by Ames Lab (USDOE) through the Office
of Basic Energy Sciences. Previous funding was also received from the Center
for Advanced Technology Development (USDOC).
Experiment
-
Thin film photonic crystals films synthesized
from colloidal crystals Power
point presentation
-
Three-dimensional photonic band gap
crystals operating at infrared wavelengths
-
Collaboration with Sandia National
Laboratories (S. Lin) to produce three-dimensional photonic crystals and
cavities at optical and infrared wavelengths
-
Highly directive resonant antennas
using PBG cavities (in collaboration with Bilkent University)
Theory
-
Effects of Disorder in a periodic
dielectric structure on the PBG.
-
Effects of Defects within periodic
dielectric structure on the PBG.
-
Guiding of light using waveguide bends
-
Effects of Absorptive, Dispersive
and Non-linear media on the PBG
-
Transfer matrix methods for simulations
of EM wave propagation
-
Efficient antennas and radiators utilizing
photonic band gap crystals, with finite
difference time domain simulations
Applications
-
Higher efficiency antennas and receivers
at
microwave and millimeter wave frequencies
-
High Q , frequency selective filters
-
PBG structures at near IR and optical
wavelengths
-
PBGs for photocatalysis
-
Effects of defects
Some Relevant Links
Disclaimer
Last updated on 24 January, 2001
Rana Biswas (biswasr@ameslab.gov)