58
Photonic
Band Gap Lattice Cavities--Duly
Research, Inc., 1912 MacArthur Street,
Dr.
David U. L. Yu, Principal Investigator, davidyu@pacbell.net
Dr.
David U. L. Yu, Business Official, davidyu@pacbell.net
DOE
Grant No. DE-FG02-03ER83845
Amount:
$750,000
Photonic band gap (PBG) structures have been proposed
for applications as particle accelerators or high power microwave/millimeter
wave sources. PBG structures have
unique modal properties that cause some modes to be “trapped” within a
portion of the lattice while other modes exist throughout the whole structure
and can be attenuated away from the trapped mode.
This project will investigate the applicability of single-defect and
multiple-defect PBG structures to klystrons and accelerating structures.
Phase I performed design, analysis, and simulations of a variety of both
single-defect and multi-defect PBG structures, with both cylindrical and planar
symmetries, for use in pulsed power sources and linear accelerators.
Algorithms for calculating the coupling strength of waveguide-loaded
cavities were developed. In Phase
II, a newly discovered, planar, PBG-like cavity will be demonstrated.
An X-band, planar, flat field cavity with multiple rods in a rectangular
array, complete with a power coupler, will be designed, fabricated, and tested
for use in a proposed Planar Lasertron.
Commercial
Applications and Other Benefits
as described by awardee: As operating frequencies increase and device sizes
decrease commensurately, the photonic band gap cavity should provide a
significant advantage because of its ability to use "oversized"
cavities and to isolate the desired mode from the higher order modes.
The targeted application is for high energy physics, especially future
linear colliders. In addition, the
oversized cavities also may be able to produce microwaves in the terahertz
range, thereby impacting high-resolution medical imaging, radar, and high-speed
communication.