Mode Confinement in Photonic Quasi-Crystal Point-Defect Cavities for Particle Accelerators

Details Mode Confinement in Photonic Quasi-Crystal Point-Defect Cavities for Particle Accelerators Mode Confinement in Photonic Quasi-Crystal Point-Defect Cavities for Particle Accelerators

2008-09-29

arxiv.org/abs/0809.4997v1

Physics

Accelerator Physics

4 pages, 4 figures, accepted for publication in Applied Physics Letters

Scientific paper

10.1063/1.2999581

In this Letter, we present a study of the confinement properties of point-defect resonators in finite-size photonic-bandgap structures composed of aperiodic arrangements of dielectric rods, with special emphasis on their use for the design of cavities for particle accelerators. Specifically, for representative geometries, we study the properties of the fundamental mode (as a function of the filling fraction, structure size, and losses) via 2-D and 3-D full-wave numerical simulations, as well as microwave measurements at room temperature. Results indicate that, for reduced-size structures, aperiodic geometries exhibit superior confinement properties by comparison with periodic ones.

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