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Center for Excitonics
Seminar Series Announcement
The Center for Excitonics has begun its seminar series of 2009 (
http://www.rle.mit.edu/excitonics).
The Center is sponsoring a series of energy-related lectures from scholars
and colleagues in the private
sector who are working in the field. We invite you to join us and to
forward this information on to others who
might be interested in attending this and other seminars.
Title: Optical Antennas for Nanophotonics
Presenter: Prof. Ken Crozier
Organization: School of Engineering and Applied Sciences
Harvard University
Date: February 4, 2009
Time: 3:00 - 4:00pm
Place: 36-428
Refreshments: Yes
URL:
http://www.rle.mit.edu/excitonics/crozier-020409.html
Abstract
Progress in nanotechnology is fundamentally dependent on tools for
observation, measurement and
manipulation. Optical techniques are well established at the macro-scale,
but difficult to apply on the
nano-scale. This is due to the mismatch between the wavelength of light,
and the dimensions of nanostructures.
Optical antennas present an opportunity to bridge these length scales.
These plasmonic devices enable electromagnetic
energy to be concentrated into deep sub-wavelength regions. In this
presentation, I will discuss several aspects of optical
antennas. I will discuss the realization of optical antennas fabricated on
the facets of laser diodes (APL 89, 093120
(2006)). It was shown experimentally that the antenna concentrated light
into a ~40*100nm spot, an area ~50 times smaller
than the diffraction limit. I will present recent work on the experimental
observation of narrow plasmon resonances in gold
nanoparticle arrays (APL 93, 181108 (2008)).
Bio
Ken Crozier is John Loeb Associate Professor of the Natural Sciences at
Harvard University. His work has been featured in MIT Technology Review,
Newsweek and Laser Focus World. MIT Technology review highlighted optical
antennas as being one of The Top 10 Emerging Technologies for 2007. He
received his undergraduate degrees in Electrical Engineering and Physics
at the University of Melbourne, Australia. He was awarded the L.R. East
Medal (university medal in engineering) by the University of Melbourne. He
received his PhD in Electrical Engineering from Stanford University in
2003 under Professors Calvin Quate and Gordon Kino. He was a recipient of
an NSF CAREER award in 2008.