title: Enhancement of spontaneous emission from the resonant modes of a photonic crystal slab single-defect cavity.
abstract: Modification of the spontaneous-emission lifetime in photonic crystal single-defect resonant modes is studied with the finite-difference time domain method. We investigate spontaneous-emission enhancement from the monopole and the dipole modes of a hexagonal lattice cavity, considering the effects of the finite emitter linewidth and spectral detuning. Large spontaneous-emission enhancement of > 50 is achieved numerically from the high-quality-factor monopole mode when the emitter linewidth is comparable with the resonant-mode linewidth. However, if broad-linewidth material is used and a detuning effect is included, the dipole mode with a low quality factor and a smaller mode volume could be more advantageous for spontaneous-emission enhancement.
authors.affiliation: Nippon Telegraph and Telephone Basic Research Laboratories, 3-1 Morinosato-Wakamiya, Atsugi 243-0198, Japan. hyryu@kaist.ac.kr
authors.forename: H Y
authors.initials: HY
authors.lastname: Ryu
authors.forename: M
authors.initials: M
authors.lastname: Notomi