Publication details
Local density of states and modes of circular photonic crystal cavities
| Authors | |
|---|---|
| Year of publication | 2005 |
| Type | Article in Periodical |
| Magazine / Source | Physical Review B |
| MU Faculty or unit | |
| Citation | |
| Field | Solid matter physics and magnetism |
| Keywords | photonic resonator; local density of states; multipole expansion |
| Description | Because the penetration depth of light in the band gap is of the order of one lattice constant of a photonic crystal, structures such as circular photonic crystals CPC confine light. We show that an extension of the CPC concept to holes in any high-index material yields confinement only in the case that the hole size is varied jointly. Applying the Bloch-Floquet theorem in such a rotationally symmetric case leads to a decomposition of the Green's tensor. By using the photonic local density of states LDOS components in a CPC, the eigenfrequencies of localized cavity modes can be efficiently found. |
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