CST – Computer Simulation Technology

Mode confinement in photonic quasicrystal point-defect cavities for particle accelerators

Title:
Mode confinement in photonic quasicrystal point-defect cavities for particle accelerators
Author(s):
E. Di Gennaro, S. Savo, A. Andreone, V. Galdi,G. Castaldi, V. Pierro, M. Rosaria Masullo
Source:
Applied Physics Letters
Vol./Issue/Date:
Volume: 93, Issue: 16, Oct 2008
Year:
2009
Page(s):
164102 - 164102-3
Abstract:
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 two-dimensional and three-dimensional 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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